Go for it now. The future is promised to no one.
To be a good loser is to learn how to win.
Be kind whenever possible. It is always possible.
Only the educated are free.
It's always too early to quit.
Be thine own palace, or the world's thy jail.
If you're going through hell, keep going.
The secret of getting ahead is getting started.
Always desire to learn something useful.
The most effective way to do it, is to do it.
When I was about 13 or 14, I had an English teacher who made a deal with me that I could get out of doing all of the year's regular work if I would write a short story a week and on Friday read it to the class.