You feel like you have to be nice all the time, 

You're  worried feeling insecure without a reason.

you can't even express how you feel that makes you hate yourself because your self esteem is low.

people doesn't notice you because your hiding from tension.

There's a voice inside your head keep torturing you, no matter how you try to escape it, it doesn't go away.

Women friend zone you no matter how you love them. 

Guess what a nice guy personality is a Shame/ trauma based personality.