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[[quoteright:350:http://static.tvtropes.org/pmwiki/pub/images/Ivan_kills_his_son_9441.jpg]]
[-[[caption-width-right:350:[[http://en.wikipedia.org/wiki/File:REPIN_Ivan_Terrible%26Ivan.jpg Ivan the Terrible has just murdered his son in the heat of the moment]]. [[http://commons.wikimedia.org/wiki/File:Ivan_the_Terrible_%26_son_-_detail.jpg Look at his eyes. Look at them.]]]]-]

->''"What have I done? Sweet Jesus, what have I done?\\
Become a thief in the night, become a dog on the run?\\
Have I fallen so far, and is the hour so late,\\
That nothing remains but the cry of my hate?"''
-->-- '''Jean Valjean''' after robbing a priest who had just given him shelter, ''Theatre/LesMiserables''

%% One quote is sufficient. Please place additional entries on the quotes tab.

Well-intentioned but misguided character -- very likely a TragicHero, a TragicVillain or AntiVillain -- [[OhCrap comes to realize that]] [[MoralDissonance his actions have caused incredible damage]], [[KickTheMoralityPet physical pain, emotional pain, or even loss of life]]. The usual line that comes after this is the title of the article (sometimes, without the "My God"). TearsOfRemorse may accompany it.

Often the realization only comes when someone/something close to the person is hurt or destroyed. In quite a few cases, that "someone/something close" is the very entity he was trying to get rid of to begin with.

Usually delivered dramatically, sometimes, [[{{Narm}} well, over-the-top]]. A villain might utter this line if they're about to take the LastSecondChance. Or a hero after being freed from TheVirus, being BrainwashedAndCrazy, or a SuperpoweredEvilSide, or after making an unintentional but catastrophic [[HumansAreFlawed mistake]].

Sometimes followed by MustMakeAmends, other times by an IgnoredEpiphany.

Compare TheseHandsHaveKilled, which can occur even the first time the character [[DirtyBusiness has killed]], even justifiably.

See also ScreamingAtSquick.

Often the result if the protagonist becomes an UnwittingPawn. Sometimes combined with HeroicBSOD; common with VillainousBSOD. Can be a self-inflicted WhatTheHellHero. Contrast IDidWhatIHadToDo, BeAllMySinsRemembered, and IRegretNothing. Compare ItsAllMyFault, HeelRealization and KickTheMoralityPet. See also OutDamnedSpot, BeingEvilSucks, NiceJobBreakingItHero, and SympatheticMurderBackstory. May be the result of an all too successful PygmalionPlot to TeachHimAnger. When a work tries to deliberately invoke this as an audience reaction, that's YouBastard (whether it's successful or not).

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!!Example subpages

[[index]]
* MyGodWhatHaveIDone/AnimeAndManga
* MyGodWhatHaveIDone/ComicBooks
* MyGodWhatHaveIDone/FanWorks
* MyGodWhatHaveIDone/AnimatedFilms
* MyGodWhatHaveIDone/LiveActionFilms
* MyGodWhatHaveIDone/{{Literature}}
* MyGodWhatHaveIDone/LiveActionTV
* MyGodWhatHaveIDone/{{Music}}
* MyGodWhatHaveIDone/RolePlay
* MyGodWhatHaveIDone/{{Theater}}
* MyGodWhatHaveIDone/VideoGames
* MyGodWhatHaveIDone/WebComics
* MyGodWhatHaveIDone/WebOriginal
* MyGodWhatHaveIDone/WesternAnimation
* MyGodWhatHaveIDone/RealLife
[[/index]]

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[[foldercontrol]]

[[folder:Ballads]]
* Literature/{{Child Ballad|s}} 54, "The Cherry-Tree Carol",
-->''"Oh, what have I done, Lord? ''
* The bandit in "Bonnie Banks o'Fordie" has one when he learns that [[spoiler:the girl he just murdered is his sister]]. It ends with [[spoiler:him stabbing himself]].
[[/folder]]

[[folder:Machinima]]
* ''Machinima/FreemansMind'' gives us this line during ''VideoGame/HalfLife1'''s 'Resonance Cascade Incident':
-->'''Freeman:''' "Oh no, this is [[{{Understatement}} not good!]] This is a ''bad experiment!'' We are ''bad people!'' Why did we usher forth the [[ApocalypseHow green apocalypse!?]]"
* In ''ClearSkies 3'', Hausmann does this during the final battle [[spoiler:and surrenders rather than see more of his people killed.]]
* Church of ''Machinima/RedVsBlue'' suffers this when he realizes that the reason he's dead is because ''he'' tampered with the tank by disabling the friendly-fire safety.
* A rather disturbing example in the final episode of ''Machinima/ArbyNTheChief''. After Arbiter literally [[AnArmAndALeg rips Chief to pieces]] [[spoiler:after learning that Chief killed Cortana, both intentionally and by accident]]. Things only gets worse for him when [[JerkAss Tyler]] [[HairTriggerTemper shows up planning to kill them both]] [[spoiler:after revealing that [[DrivenToSuicide Eugene committed suicide]]]]. This hits Arbiter so badly that [[HeroicBSOD he starts mumbling the montra "I'm in my happy place" over and over again]]. [[DownerEnding It gets even worse for there]]...
[[/folder]]

[[folder:Tabletop Games]]
* ''TabletopGame/MagicTheGathering'': In ''[[Literature/OdysseyCycle Judgment]]'', Kamahl pulls a "Dear [[FantasyPantheon Fiers]], what have I done?" (with a nice, hearty BigNo) after mortally wounding his sister Jeska in a fit of [[ArtifactOfDoom Mirari]]-induced temper.
* ''{{Warhammer40000}}'': A lot of people who are being [[BrainwashedAndCrazy mind-controlled by the Chaos gods]] are only able to break free immediately after they've done something they really shouldn't have, such as [[HorusHeresy betraying their adopted father and dooming the galaxy to an eternity of war]] or [[DarkAngels betraying their entire legion and mortally wounding their adopted son.]]
** Corax, the Raven Guard Primarch, went through a catastrophic moment like this. After the Isstvan drop site massacre, most of his legion was decimated, so he ordered some questionable methods to rebuild the legion. His orders left a lot of the recruits as mutated monstrosities. He personally {{Mercy Kill}}ed them, locked himself away for an entire year praying for their souls and his, and in the end, he took his ship and flew it straight into the Eye of Terror, his last words being simply "[[ShoutOut never more]]".
[[/folder]]

[[folder:Visual Novels]]
* Part of the meltdown of [[spoiler: Acro]] in ''VisualNovel/AceAttorney''. You don't actually see the moment onscreen but the aftereffects are obvious during his breakdown. [[spoiler: In attempting to murder Regina he accidentally killed her father, to whom Acro and his brother owed everything.]] As [[SympatheticMurderer Sympathetic Murderers]] go he's high on the list.
** In ''VisualNovel/PhoenixWrightAceAttorneyDualDestinies'', in the DLC case, [[spoiler:Marlon Rimes]] is quite similar to [[spoiler:Acro]]. [[spoiler:His girlfriend died during a performance a year ago, and he believed Orla the orca whale was responsible, not knowing that 1) His girlfriend had a heart condition and 2) it was an entirely different orca. He tried to kill Orla by draining the water, but Jack Shipley, the owner of the aquarium and his boss, rushed out to save her, slipping and falling in the empty pool in the process despite Marlon's attempt to save him. Marlon tried to frame Orla for Jack's murder, but ultimately realized the truth of things and had this reaction. Thankfully, after it's pointed out that he tried to save her, he decides to make amends, however long it takes]].
* Archer from ''VisualNovel/FateStayNight'' as revealed in UBW route. [[spoiler: He is trying to kill Shirou, himself from past, because he wants to prevent him making a pact with world to protect people, because it'll only make him one who kills some to save many.]]
* One of the extended bad endings in the PS2 version of ''VisualNovel/SchoolDays'' has [[spoiler: Kotonoha murder Sekai in cold blood and then offer herself to Makoto, who was watching. Makoto's horrified reaction causes Kotonoha to realize what she has done, and she breaks down in tears.]]
[[/folder]]

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