That's sometimes a very frustrating thing to read- the "get rid of environmental triggers" thing. Speaking solely for myself here, my triggers are either really, really difficult to do anything about (financial difficulties) or a bad idea to try and get rid of (my academics). Sometimes you're just stuck at a point in your life where you can't fix your triggers.
I think there must be more we can do than get rid of triggers, or add more meaningful things. Maybe not as effective, but mental illness is a complex thing. Complex things have weak points. Sometimes I wonder of we're ignoring the trees and just seeing the forest here. Mental self-help advice is so... formulaic.
Just getting rid of stuff is one way to stop a trigger. Building up a way to deal with it is another. Like, you could come up with a plan for your finances, and practice bringing up your finances and saying that plan, so you build another association with your finances that isn't a loop of anxious thoughts. Like role-play therapy, where you plan out and practice your reactions to someone saying something before hand.
I am assuming a heluvalot about you with that advice though, sorry if that doesn't even make sense.
For a site extremely focused on fixing bad thinking patterns, I've noticed a bizarre lack of discussion here. Considering the high correlation between intelligence and mental illness, you'd think it would be a bigger topic.
I personally suffer from Generalized Anxiety Disorder and a very tame panic disorder. Most of this is focused on financial and academic things, but I will also get panicky about social interaction, responsibilities, and things that happened in the past that seriously shouldn't bother me. I have an almost amusing response to anxiety that is basically my brain panicking and telling me to go hide under my desk.
I know lukeprog and Alicorn managed to fight off a good deal of their issues in this area and wrote up how, but I don't think enough has been done. They mostly dealt with depression. What about rational schizophrenics and phobics and bipolar people? It's difficult to find anxiety advice that goes beyond "do yoga while watching the sunrise!" Pop psych isn't very helpful. I think LessWrong could be. What's mental illness but a wrongness in the head?
Mental illness seems to be worse to intelligent people than your typical biases, honestly. Hiding under my desk is even less useful than, say, appealing to authority during an argument. At least the latter has the potential to be useful. I know it's limiting me, and starting cycles of avoidance, and so much more. And my mental illness isn't even that bad! Trying to be rational and successful when schizophrenic sounds like a Sisyphusian nightmare.
I'm not fighting my difficulties nearly well enough to feel qualified to author my own posts. Hearing from people who are managing is more likely to help. If nothing else, maybe a Rational Support Group would be a lot of fun.