I journal my feelings, which helps a ton. Instead of burdening others, I write it all down, get it out of my head and onto paper where I can re-read and evaluate it, and I process my feelings through writing.

I used to be the same way as you and learned that what I really was doing was processing my emotions... the reassurance and validation you need to be able to give to yourself. I do this with positive affirmations.... like, "I can do this, I am doing just fine, and I will do this". Whenever you feel yourself needing reassurance, just give yourself the reassurance, like "I am doing alright, I may have messed that up, but I will do better next time", kind of thing. Not sure if that helps any, but journaling is a great way to self reflect and also to delve into what is going on with you. (((Hugs))))