Problems are not stop signs, they are guidelines.
To know oneself, one should assert oneself.
Either you run the day or the day runs you.
Wherever you are - be all there.
Be thine own palace, or the world's thy jail.
If you've got a talent, protect it.
It's always too early to quit.
The most effective way to do it, is to do it.
If you think you can do it, you can.
Know or listen to those who know.
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.