In teaching you cannot see the fruit of a day's work. It is invisible and remains so, maybe for twenty years.
If you can't sleep, then get up and do something instead of lying there worrying. It's the worry that gets you, not the lack of sleep.
Dancing is bigger than the physical body. Think bigger than that. When you extend your arm, it doesn't stop at the end of your fingers, because you're dancing bigger than that. You're dancing spirit.