To know oneself, one should assert oneself.
Know or listen to those who know.
By failing to prepare, you are preparing to fail.
Problems are not stop signs, they are guidelines.
I can, therefore I am.
To be a good loser is to learn how to win.
Be thine own palace, or the world's thy jail.
The secret of getting ahead is getting started.
Begin to be now what you will be hereafter.
If you're going through hell, keep going.
There must be a positive and negative in everything in the universe in order to complete a circuit or circle, without which there would be no activity, no motion.
To enjoy enduring success we should travel a little in advance of the world.