Expect problems and eat them for breakfast.
It's always too early to quit.
Be gentle to all and stern with yourself.
Be kind whenever possible. It is always possible.
To know oneself, one should assert oneself.
To be a good loser is to learn how to win.
Well done is better than well said.
Know or listen to those who know.
Problems are not stop signs, they are guidelines.
The dog that trots about finds a bone.
Strange as it may seem, no amount of learning can cure stupidity, and formal education positively fortifies it.