Be gentle to all and stern with yourself.
Quality is not an act, it is a habit.
If you can dream it, you can do it.
Expect problems and eat them for breakfast.
Always desire to learn something useful.
If you think you can do it, you can.
The most effective way to do it, is to do it.
Know or listen to those who know.
Problems are not stop signs, they are guidelines.
Never complain and never explain.
I learned easily and had time to follow my inclination for sports (light athletics and skiing) and chemistry, which I taught myself by reading all textbooks I could get.