It's always too early to quit.

To know oneself, one should assert oneself.

If you're going through hell, keep going.

What you do today can improve all your tomorrows.

Without hard work, nothing grows but weeds.

By failing to prepare, you are preparing to fail.

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

The secret of getting ahead is getting started.

You never know what motivates you.