Know or listen to those who know.
Problems are not stop signs, they are guidelines.
Never complain and never explain.
The secret of getting ahead is getting started.
If you're going through hell, keep going.
Begin to be now what you will be hereafter.
Expect problems and eat them for breakfast.
If you've got a talent, protect it.
Always desire to learn something useful.
By failing to prepare, you are preparing to fail.
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.