I haven't had very much therapeutic work at all in regards to such issues, outside of self-help things I have found online over the years. However, the main coping method I have developed after all this time is to try not to have any expectations or hopes. Now it does tend to end up with me leaning heavily towards pessimism and even borders on nihilism at times if I don't watch it. But it also helps me to be a calmer person, even if a very cynical and detached one most of the time. I don't see it as the best solution, but it has been better than nothing given lack of opportunities like some amazing DBT class.