Example Fail

I'm good at some things, bad at other things, by nature. 

I've been okay at some things I tried to do, bad at other things I tried to do.

Some people saw the things that I was okay at and looked to me perhaps as an example or reference point for improving their own behavior. They were doing well. Then I opened my mouth, said something stupid, and ruined it. 

I feel too inadequate to be an example. I resent it. But if people are going to use me as a reference point, whether I like it or not, I think I have no choice but to make sure my speech and behavior aren't such as to cause other people to go astray.