You can't have a better tomorrow if you're still thinking about yesterday.

Charles F. Kettering

In today's rush, we all think too much - seek too much - want too much - and forget about the joy of just being.

Eckhart Tolle

Worrying is a misuse of your imagination.

Dan Mace

If we examine our thoughts, we shall find them always occupied with the past and the future.

Blaise Pascal

Real difficulties can be overcome; it is only the imaginary ones that are unconquerable.

Theodore N. Vail

No amount of guilt can change the past and no amount of worrying can change the future.

Umar ibn Al Khattab