I feel like such a bother to people sometimes
Why do you feel like a bother to people?
I hate to experience this feeling, but I feel like I am nothing.
You probably aren't actually a bother to people, you shouldn't think lowly of yourself. You should have confidence and assume the best.
It's over. I am lower than a rock on the ground.
I understand that you don't feel like you amount to much, but dragging yourself down will only mire you in deeper. Don't give up. Talk to someone and get the help you need.