My eleven years old pupil whom I teach English as a second language once a week had a test on Tuesday and he got the best mark. It made me incredibly happy and proud. I have taught him for about a year now and watched him change his attitude and behaviour during our lessons. Gradually, I had a feeling like he was getting better, but now we have it quantified : ) It is not my success only, but I am greatly satisfied with his progress and with myself as a teacher too.
I find that, in many ways, teaching is similar to gardening. Only instead of watching the plants grow, you are watching the ideas sprout, attitudes shape and the mind of your student develop. And while in in the garden you can sit back and watch it grow and do its own thing, I find that in teaching, you have to be aware of what you are doing all the time, which is sometimes very exhausting.