The difference between greed and ambition is a greedy person desires things he isn't prepared to work for.

Habeeb Akande

A champion is someone who gets up when he can't.

Jack Dempsey

Persistence is very important. You should not give up unless you are forced to give up.

Elon Musk

If there is no struggle, there is no progress.

Frederick Douglas

Men weary as much of not doing the things they want to do as of doing the things they do not want to do.

Eric Hoffer

Choose the positive. You have a choice. You are the master of your attitude. Choose the positive, the constructive.

Bruce Lee