Jason and his comrades work for an organization (or come from a cultural background) where seeing a shrink is considered a sign of weakness (or is otherwise bad) and avoid therapists to keep up appearances.
Inverted: Jason, an ordinary guy, is forced into a Bedlam House and ends up with a host of problems as a result.
There are truly no therapists in the whole universe, so when Lance and Molly start going Ax-Crazy, Jason invents psychiatry.
There's absolutely no therapists in the universe, which means pretty much everyone has mental problems.
Jason is constantly complaining about having no one to confide in, but everyone he meets suggests he go to a therapist, half his friends are therapists, the other half are constantly suggesting their therapists, and therapists frequently approach him and offer their services. However, Jason is addicted to the attention he gets from moaning and comes up with increasingly feeble excuses not to go into therapy.
Zig Zagged: The cast can get by without help by relying on each other, but there are situations where that isn't enough and they get close to self-destruction, occasionally to the point where they stop a friend from killing him/herself. After they save the world/break the Masquerade/whatever, then they move on, get the help they need, or self-destruct, whatever the case might be.
Averted: There are therapists available, and the characters can see them anytime they need to (during regular office hours)
Lampshaded: "With all the crap they go through, you'd think they would have a therapist on call."
Invoked: Anyone who'd want to join this outfit would have to be crazy, so no complaining that you need to see a shrink or something once you get back from the field. For those of you who do make it back, anyway.
Defied: "Okay, you guys. We are not doing the angst-suicidal-Byronic-misery thing. All of us are going to a therapist RIGHT. NOW."
Discussed: "With the issues some of our group have, it's amazing none of us have been committed, let alone gone to therapy."
Conversed: "Why do none of these characters ever take advantage of the psychological assistance that must be available to them?"