To know oneself, one should assert oneself.
It's always too early to quit.
Only the educated are free.
Problems are not stop signs, they are guidelines.
If you think you can do it, you can.
If you've got a talent, protect it.
Expect problems and eat them for breakfast.
If you're going through hell, keep going.
Do not weep do not wax indignant. Understand.
Always desire to learn something useful.
I think it's more important to be fit so that you can be healthy and enjoy activities than it is to have a good body.