A positive mental attitude is the right mental attitude.
Riches don't respond to wishes. They respond only to definite plans, backed by definite desires, through constant persistence.
Every problem comes with an equal or greater opportunity
You’ve got to be sure of yourself before You can ever win a prize.
Control your own mind, and you may never be controlled by the mind of another.
One way to avoid criticism is to do nothing and to be a nobody. The world will then not bother you.