Pumpkinseed, I can relate. I don't think I'm competent at one of my previous jobs but my co-workers often claimed that I was fine, some even extolled me. What I discovered is that I had been working in a toxic environment. People had been sending me mixed signals, some people were harsh for no reason, some people were simply supportive. I became lost and confused as a result of their behaviors, so I have to remember it's NOT ALWAYS ME. It's not always my performance. It could be that some people are just bad at coping with their frustration, anger and anxiety! And of course, some are just simply not intuitive to people's feelings.