It's always too early to quit.

Be thine own palace, or the world's thy jail.

What you do today can improve all your tomorrows.

Go for it now. The future is promised to no one.

If you're going through hell, keep going.

Without hard work, nothing grows but weeds.

Know or listen to those who know.

The secret of getting ahead is getting started.

Well done is better than well said.