Log the things you have done that push you out of your comfort zone, make you anxious, scared, etc. It can be anything. The only way past it is through it.
I'll start: Had breakfast with my boss the other day. Thats rough for me as I have ptsd induced social anxiety
Going to Mass on Sunday. By myself. Practically everybody at Mass goes with their SO or family or friends but I don't have anybody to go with . So, I go by myself and I'm uncomfortable the whole. darn. time.