frustration

I taught my first lesson today. In a word, I was crap. That's right, it took me 5 hours to prepare a 20-minute piece of crapola. My student Vera, who was obviously flown in from some Siberian prison camp, seemed to think so anyway (the stony silence and constant eye-rolling gave her away). Worse still, I'm not sure that I actually like teaching. Its not that I don't have the patience, but I really don't like doing things that I'm crap at. Egads.Any words of wisdom, former/ current teachers of the world?...