I think that it is a self-image issue. You find yourself jumping to incorrect conclusions about yourself, on the negative side. That is what it sounds like to me.

I do have extensive experience with this type of thing. I have always put myself down, never knowing how I truly felt inside. This tendency is a bit extreme in my case. Checking out Steps to Better Self-Esteem - Forums at Psych Central may be rather helpful to you. Check it out!

Welcome to PC too!