A designer knows he has achieved perfection not when there is nothing left to add, but when there is nothing left to take away.
Successful design is not the achievement of perfection but the minimization and accommodation of imperfection.
Design must be functional, and functionality must be translated into visual aesthetics without any reliance on gimmicks that have to be explained.
If you don't design your own life plan, chances are you'll fall into someone else's plan. And guess what they have planned for you? Not much.