I have a strange relationship with my fear of failure.
At times, I'm unbeatable. This is actually my default mode. For instance, just the other day I thought it would be cool if I could program websites. So I started looking into it, and I found some free classes online that could teach me, and I started to do some of the tutorials.
Then, of course, reality hit me, and I realized I had NO time for a new commitment like that... although I still think I could do it.
And with teaching, I truly think I could be among the best teachers in the nation. Yet... in the back of my mind, I think I'm a farce. A cheat. All these people telling me how great of a job I've done here are somehow misguided or missing something, and if they peeled back the layers, they'd see me for my true self.
So I guess it depends on the time of day. Go figure.