Caught in a trap.

When I started college, one of my biggest fears was that I would get caught up in the trap of comparing my results for my essays. Slowly but surely my marks have improved, and as they get higher I then expect higher marks or my essays. I am now caught in this trap. If I get lower than a certain mark for an essay I am disappointed, which my rational mind knows is a silly way to be, but it doesn't stop me being this way!