Problems are not stop signs, they are guidelines.
Without hard work, nothing grows but weeds.
Well done is better than well said.
If you're going through hell, keep going.
Who seeks shall find.
If you can dream it, you can do it.
To be a good loser is to learn how to win.
Begin to be now what you will be hereafter.
Expect problems and eat them for breakfast.
Go for it now. The future is promised to no one.
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.