Be gentle to all and stern with yourself.
The dog that trots about finds a bone.
Well done is better than well said.
You never know what motivates you.
Never complain and never explain.
Do not weep do not wax indignant. Understand.
It's always too early to quit.
Always desire to learn something useful.
The most effective way to do it, is to do it.
If you've got a talent, protect it.
Be thankful for problems. If they were less difficult, someone with less ability might have your job.