I think I have similar behavior to yours. It is difficult for me to make friends, much less find them. I too see a Therapist and do a lot of writing. The writing really helps me. I also just recently spent an extended time period at home and alone. The things I did that helped me were listening to music, doing Spring cleaning in my apartment, going through my clothes and taking all the old ones to the donation drop off. Sticking to a regular eating and sleeping schedule are important too.

It is also good that you have given yourself the goal of getting out with the intention of making some new friends. Surrounding yourself with new people, going new places, and doing new things will help not allow you to slip back into the past behaviors that might have been self-destructive.

I have the pretty much the same issue and as like you, am looking for different ways in which to cope with it.