Consciously I know I'm not a worthless piece of filth, but subconsciously it seems to be rooted in my mind so deeply...

"Why should I bother talking to someone? That person doesn't give a shit about my thoughts. Why should I try to get that girl? I'm ugly and it won't work. Please just don't look at me. Don't give me false hope... I know I'm disgusting"

How do you get rid of a mindset like this?