"I was happy to be rid of therapists" and "I cut myself" shouldn't appear in the same post unless they also appear alongside, "That therapy worked and I don't cut myself any more thanks to it!"

It sounds like you have two things going on. Thing 1 is you're gay, which really isn't a huge deal. Especially in 2016 anywhere remotely urban. Thing 2 is that you don't cope well with difficult situations, which manifests as self-destructive inclinations.

Thanks to your parents' poor judgment, you had some previous therapy for thing 1, when thing 1 isn't a thing that really warrants treatment. You should have been getting therapy for thing 2.

On the plus side, it sounds like you're good with yourself and your life is moving in a good direction. But life's hard in general. Even for straight people who don't face judgment from bigots. If things go south all of the sudden, you lose your boyfriend, your job, your family, your money, your health, or any combination of those things, and suddenly it seems like everything's falling apart, you've developed better ways to cope, right?