History Main / HisOwnWorstEnemy

** [[Characters/TheOwlHouseAmityBlight Amity Blight]]'s self-destructive nature hinders relationships and her responsibility. She [[NeverMyFault blames Luz for embarrassment]], accepts reckless challenges, and rejects Luz's friendship. Amity attempts to erase Willow's memory but faces problems. She was blackmailed into ending her friendship, but she decides to go along with the belief that Willow is weak. Her CharacterDevelopment involves a HeelRealization and learning to work on her issues.

** [[Characters/MarvelComicsThanos Thanos]] has gained omnipotence at least once and still manages to somehow snatch defeat from the jaws of victory. Supposedly, it's because he doesn't truly believe he deserves to win and thus he unconsciously sabotages himself.

* The ''ComicBook/SonicTheHedgehogIDW'' incarnation of Dr. Eggman has a ''very'' severe self-destructive streak; he constantly enacts [[ComplexityAddiction complex schemes]] to beat Sonic, never bothers to come up with contingencies, his ego prevents him from reflecting on and learning from his mistakes, and whenever something ''does'' go wrong, rather than stay calm and seek a solution, he ends up [[BlindedByRage throwing tantrums and forgoing any further strategy]]. [[spoiler:Orbot even comes right out and admits to Starline that while Sonic's skill and power undoubtedly play a part, it's mostly Eggman's own flaws and [[DidntThinkThisThrough inability to plan ahead for the long-term]] that lead to his numerous defeats.]]

* ''WesternAnimation/TheSuperMarioBrosMovie'': In the end, [[NeverMyFault no matter how many times he blames Mario]], Bowser's greatest enemy is himself. [[spoiler:His campaign to rule the world and bring misery to others is why Peach ''hates'' him to the core. His paranoia that Mario may win Peach's love leads him to personally antagonize the Mario Brothers, [[CreateYourOwnHero which not only makes them the superheroes adored by everyone]], including Peach, but [[SelfFulfillingProphecy he also ended up deepening the bond between Mario and Peach, which is soon destined to blossom into romance, the very thing he tried to prevent]]. By the time Mario and Donkey Kong arrive at Bowser's Castle to save the day, Bowser's wedding is already in ruins because he genuinely thought Peach would love him despite evidence to the contrary.]]

** The High Evolutionary in ''Film/GuardiansOfTheGalaxyVol3'' is trying to "perfect the universe" but is such a warped individual that he's incapable of improving it except by accident. His standards for perfection are impossibly high and contradictory, while he's also too insecure to tolerate his creations outdoing him. His actor explains how he's trapped himself in the cycle of creating new species and societies, growing dissatisfied with each of them, and destroying them before starting over having learned nothing in the process.

* ''Franchise/HarryPotter'': Although Harry is Voldemort's [[spoiler:literal]] mortal enemy, Voldemort [[spoiler:does have a huge responsibility for his own downfall right from the very beginning, when he was presented the Schrodinger's Prophecy he could've chosen to ''ignore'', but didn't, and in doing so, created his own downfall with Harry's scar. The prophecy even explicitly states that it would be Voldemort's own actions- to "mark [the chosen one] as his equal"- that would lead to the prophecy's subject becoming his enemy]].

* Walter White from ''Series/BreakingBad'' has one fatal flaw throughout the series: [[SmugSnake his ego]]. While most of what happens to him can also be attributed to outside forces, one incident stands out as plain stupid self-sabotage: [[spoiler:His DEA agent brother-in-law Hank Schrader mentions at a dinner that he's basically given up searching for Heisenberg (Walt), content to believe another suspect (the dead Gale Boetticher) was the guy. Walt, who is drunk and seemingly unable to let someone else take the credit for his genius, suggests to Hank that there was another guy who was the REAL cook. This puts Hank back on the case, and Hank's snooping around becomes a MAJOR issue for Walt's business from there on out.]]

** The Thirteenth Doctor, due to her insistence on bottling up all her traumas and negative emotions rather than properly dealing with any of it, allows her suppressed rage to start bubbling over and her mental health to take a huge nosedive, to the point that the entirety of series 12 seems like one ongoing mental breakdown for her.

** [[Characters/TheOwlHouseAmityBlight Amity Blight]]'s self-destructive nature hinders relationships and her ability to take responsibility for her actions. She [[NeverMyFault blames Luz for her embarrassment]], accepts Luz's reckless challenge, [[MisplacedRetribution accuses Luz of having her cheat when it was Lilith's doing]], and rejects Luz's friendship. [[spoiler:Amity attempts to erase Willow's memory, but it becomes a problem she faces. It also turns out that she was blackmailed into ending her friendship with Willow, but she goes with the idea of Willow being too "weak" instead of simply telling her that because she was too stubborn and proud to do so.]] Her CharacterDevelopment involves a HeelRealization and learning to work on her issues.

** [[Characters/TheOwlHouseLuzNoceda Luz Noceda]]'s single biggest flaw is the fact that as a result of her emotionally difficult childhood, literally all of Luz's positive emotions are focused outwards which while making her a GenkiGirl also causes her to suffer from a case of self-loathing. In "Separate Tides", Luz pushes herself to try and redeem her perceived failing of playing a part in Eda and Lilith losing their magic by trying to single handedly slay a Selkidomus even though this could get her killed. In "Edge of the World", she suffers a ''huge'' [[HeroicBSOD emotional breakdown]] due to the revelation that she inadvertently aided Belos with his plan of genocide in the previous episode which carries over into "O Titan, Where Art Thou", where Luz spends the entire episode hyper fixated on attempting to "correct her mistake" by halting Belos' plans even if it means ''getting into a fight with Eda'' in order to not be sent away for her protection. Finally in "Thanks to Them", she is so overwhelmed by guilt for everything that has happened that she is willing to [[OOCIsSeriousBusiness stay in the Human Realm forever]] despite the fact that doing so would be nothing short of catastrophic for Luz's mental health and in the long run probably her physical health as well.

** [[Characters/TheOwlHouseAmityBlight Amity Blight]] self-destructive nature hinders relationships and her ability to take responsibility for her actions. She [[NeverMyFault blames Luz for her embarrassment]], accepts Luz's reckless challenge, [[MisplacedRetribution accuses Luz of having her cheat when it was Lilith's doing]], and rejects Luz's friendship. [[spoiler:Amity attempts to erase Willow's memory, but it becomes a problem she faces. She was blackmailed into ending her friendship with Willow, but she was too stubborn and proud to do so.]] Her CharacterDevelopment involves a HeelRealization and learning to work on her issues.

** [[Characters/TheOwlHouseAmityBlight Amity Blight]] is very self-destructive to the point where any chance at forming meaningful relationships is killed by her pride and inability to take accountability or responsibility for her actions. This is rather evident when [[NeverMyFault she blames Luz for her embarrassment]] instead of realizing that [[LaserGuidedKarma she got herself in trouble for acting out at school]], when she accepted Luz's reckless challenge to a Witch's Duel on the terms that [[KickTheDog Luz gives up magic forever if Amity wins]] after she provoked her by picking on her and king instead of simply declining the challenge, accuses her of making her look bad in front of the Emperor's Coven when it was really [[MisplacedRetribution Lilith's cheating]] that got her in that position, constantly [[{{Irony}} rebuffs Luz's offer of friendship]] despite [[LonelyAmongPeople her loneliness with her fake friends]], and when she attempts to [[spoiler:erase Willow's memory of her so she wouldn't have to deal with the pain of what happened or for anyone to discover their former friendship, only for it to become a problem she's forced to confront]]. And we then find out when she [[spoiler: was blackmailed into ending her friendship with Willow, she could've saved face and told her that, but she was too stubborn and too proud to do so and instead went with the idea of Willow being "too weak"]]. Her CharacterDevelopment involves her having a HeelRealization and learning to work on her issues.

* "WesternAnimation/DannyPhantom": Vlad Masters. In a sense, when Danny Phantom isn't the one who ruins his plans, it's ''Vlad himself''. His utter refusal to let go of the family he wants, or the woman he wants, does him more harm than good. When Maddie flat out rejects his offer, he refuses to move on and still continues trying to kill Jack Fenton to get his hands on her. He wants Danny for a son so badly that he resorted to cloning. He could've been happy to settle for Danielle, but he wanted a "perfect" replica and a son, not an imperfectly made daughter, resulting in another Phantom opposing him. It's probably no wonder he wanted world domination by the final season, which would grant him everything he wants, but even that gets repeatedly botched due to an oversight or his overestimating his own skills and abilities.

** ''[[Film/GodzillaKingOfTheMonsters2019 Godzilla: King of the Monsters]]'': [[Characters/MonsterVerseRussellFamily Emma Russell]] is extremely arrogant, refuses to acknowledge that she might not be clear-headed due to her grief, and these things ultimately shoot her in the foot. She aims to stop humanity's meddling with the Titans from causing the next mass extinction including our own destruction, she aims to create [[UtopiaJustifiesTheMeans a better world]] for her remaining child, and she aims to ensure that some good can come out of Andrew's demise. But by trying to control the Titans, [[spoiler:including Godzilla's three-headed rival]], Emma ironically puts the world in danger of an even more rapid global apocalypse that will surely wipe out the entire human race; [[spoiler:and because she didn't bother to properly indoctrinate Madison into her radicalism (and because Emma seems too lost in her madness to even ''notice'' straight away how horrified Madison is),]] Emma ends up completely alienating her remaining child, who calls out her blatant InsaneTrollLogic [[spoiler:of believing that Andrew would ever consider a million repeats of the tragedy that killed him being enacted by his own mother to be a ''good'' thing]].

** ''[[Film/GodzillaKingOfTheMonsters2019 Godzilla: King of the Monsters]]'': [[Characters/MonsterVerseEmmaRussell Emma Russell]] is extremely arrogant, refuses to acknowledge that she might not be clear-headed due to her grief, and these things ultimately shoot her in the foot. She aims to stop humanity's meddling with the Titans from causing the next mass extinction including our own destruction, she aims to create [[UtopiaJustifiesTheMeans a better world]] for her remaining child, and she aims to ensure that some good can come out of Andrew's demise. But by trying to control the Titans, [[spoiler:including Godzilla's three-headed rival]], Emma ironically puts the world in danger of an even more rapid global apocalypse that will surely wipe out the entire human race; [[spoiler:and because she didn't bother to properly indoctrinate Madison into her radicalism (and because Emma seems too lost in her madness to even ''notice'' straight away how horrified Madison is),]] Emma ends up completely alienating her remaining child, who calls out her blatant InsaneTrollLogic [[spoiler:of believing that Andrew would ever consider a million repeats of the tragedy that killed him being enacted by his own mother to be a ''good'' thing]].
** ''Film/GodzillaVsKong'': The heroes fail to do anything to stop the villainous [[EvilInc Apex Cybernetics]], and ultimately, the only person who kills [[Characters/MonsterVerseWalterSimmons Walter Simmons]] and ruins everything he's worked towards [[SelfDisposingVillain is Walter Simmons]]. His pride, ego, and [[PsychopathicManchild immaturity]] lead to his own death ''twofold'' [[spoiler:when he: (1) decided before the movie's start that it was somehow '''not''' a monstrously-dangerous idea to use '''[[OmnicidalManiac Ghidorah]]'s undead skull''' as the main part of his artificial Titan's brain, and when he (2) [[UnfinishedUntestedUsedAnyway foregoes basic testing]] on the synthesized HollowEarth element out of a desire for instant gratification and a belief that [[CrazyEnoughToWork fortune favors risk-takers]], directly shooting down [[TheDragon Ren Serizawa]]'s pragmatic cautioning. Both of which together lead to Ghidorah's subconsciousness possessing the empowered Mechagodzilla and killing Simmons, before it goes on a rampage which almost surely burns Apex's name and its MugglePower agenda to ashes]]. What's more, Simmons' actions against Godzilla with his secret project were entirely unnecessary, and he ultimately acted solely out of wounded pride and out of a desire for acclaim and power – if he'd just left well enough alone after the events of ''[[Film/GodzillaKingOfTheMonsters2019 Godzilla: King of the Monsters]]'', the world would still be enjoying an all-round beneficial peace between man and Titan, and Simmons would still be alive and could have profited off the Titans' existence through far more legitimate ventures.