I Don't Want to Remember

Today, I got picked last for Geography Baseball when we were picking teams. At the age of 24, it hurts just as bad as when I was 9. Those thoughts of: "Why don't people like me?" and "They think I can't do this" surfaced again. Long after the game has ended, those feelings and thoughts keep echoing inside of me. How can I go back to class tomorrow? When will these feelings be pushed back far enough in mind that I won't think of them every other minute?