If you've got a talent, protect it.
The wise does at once what the fool does at last.
To be a good loser is to learn how to win.
Wherever you are - be all there.
Never complain and never explain.
To know oneself, one should assert oneself.
If you think you can do it, you can.
If you're going through hell, keep going.
I can, therefore I am.
Do not weep do not wax indignant. Understand.
If you decide to design your own language, there are thousands of sort of amateur language designer pitfalls.