One should guard against preaching to young people success in the customary form as the main aim in life. The most important motive for work in school and in life is pleasure in work, pleasure in its result, and the knowledge of the value of the result to the community.
I've come to believe that each of us has a personal calling that's as unique as a fingerprint - and that the best way to succeed is to discover what you love and then find a way to offer it to others in the form of service, working hard, and also allowing the energy of the universe to lead you.
That tree is very old, but I never saw prettier blossoms on it than it now bears. That tree grows new wood each year. Like that apple tree, I try to grow a new little wood each year.
Everybody has a calling. And your real job in life is to figure out as soon as possible what that is, who you were meant to be, and to begin to honor that in the best way possible for yourself.
The only true measure of success is the ratio between what we might have done and what we might have been on the one hand, and the thing we have made and the things we have made of ourselves on the other.