I've been going through some stuff over the past month and got very emotionally involved with a friend. This friend is the opposite of me emotionally - always in control etc. 

I went through some really intense stuff and it was too much for him. I had to sever ties. So now I'm here feeling like a drama llama, not proud of the way I've behaved, and left with bitter regret.

How do I handle this? How do I stop feeling like such shit?

PS, I got diagnosed about a year and a half ago, but I'm not in therapy as I can't afford it.