It's always too early to quit.

To know oneself, one should assert oneself.

Well done is better than well said.

Things do not happen. Things are made to happen.

The secret of getting ahead is getting started.

Expect problems and eat them for breakfast.

To be a good loser is to learn how to win.

If you think you can do it, you can.

The wise does at once what the fool does at last.