Can someone explain to me why I'm so sensitive?

Why do I take every little word straight to heart?

Why do I mull over everything someone does or says to me?

I promise I'm not that naive. But I just want everyone to like me...

I know that's silly, but it's true.

I have such a hard time proving myself, I need that confirmation that people do like me.

So when they say something that's on edge, I have to step back and wonder what I did so wrong?