You will only be remembered for two things: the problems you solve or the ones you create.
- Mike Murdock

A pessimist sees problems in opportunities whereas an optimist sees opportunities in problems.

-Winston Churchill

Some people bear three kinds of trouble - the ones they've had, the ones they have, and the ones they expect to have.
- H.G. Wells

Obstacles can't stop you. Problems can't stop you. Most of all, other people can't stop you. Only you can stop you.
- Jeffrey Gitomer