I'm not trained at all in therapy but the 'figure out what happened' answer might be self esteem issues. Honestly. Issues with self esteem often manifest in ways which may not seem like a self esteem problem to that person. I so know, though, that I have a similar story in terms of construct. I'm 21 and I used to be a lot more outgoing and confident, but over the past couple years I've seemed to have lost that and it bugs me. Thing is, I get upset about it too which just makes things worse (like how you cry when you see tips).
Do you feel similar that things have been going downhill for while and you often worry and dwell which just really makes you feel worse?