If you think you can do it, you can.
Who seeks shall find.
Be thine own palace, or the world's thy jail.
If you're going through hell, keep going.
To know oneself, one should assert oneself.
Be kind whenever possible. It is always possible.
Begin to be now what you will be hereafter.
If you can dream it, you can do it.
Know or listen to those who know.
Go for it now. The future is promised to no one.
I used to spend every morning in detention at my old school.