What should I do?

I've been there and it's horrible, I do have a few suggestions, but doesn't mean they are miracle cures or that I'm right, they may or may not help.
Change your username?? Everytime you log on that's the first thing you see, even if that's how you feel it's still keeping your brain in that place.
Change something at home, whatever you can or are allowed to do, paint, move furniture, move your bed, put up different pictures, this may sound stupid but it's to change habits and trick your brain into believing things have changed.
Walk/ drive a different way home, go to a different bar/ café change your clothes if that's possible Do something different
It's worth a go

You've got to change your focus.

Something is missing from your life and only you can identify it. Distractions occur, but things can always come back; it can take a while, but when it's found you will know.

My thought would be that it means you have unresolved issues that you are usually distracted from. That's just a guess though

I feel the same way. I hate being alone with my thoughts, especially at school. Everyone else seems fine but I'm torn up inside. I know what's partially causing these feelings and I'm trying to deal with it but I'm tired of trying and making stupid, brainless decisions in the process. It's like one step forward but two steps back.

Whenever I'm home alone with my thoughts its when I'm the most happiest, What do people do for you that makes you happy and unhappy when they're not around?

I make lists to keep my mind distracted.