Quick story: In elementary school, the teacher decided to call up the students in groups to leave, so she called the girls up then the boys second. I wasn't paying attention to what she was saying, so when she said, "Let's go," I, and one other boy, got up with all the girls. After the usual "Oh, what pretty little girls you both are," mockery from the teacher, some boys decided to have fun me, too. When I pointed out that another boy (who was standing right there with them) did it too, their response was, "Yeah, but we like him."
Moral of the story: You probably are NOT screwing things up much more than everyone else does on average, but because the others don't like you as a friend, every mistake you DO make is the 'dumbest thing ever'. Don't be so quick to underestimate yourself.
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Everything would be better if you were in charge.