What is a life changing quote or tip that helped you with your anxiety?

One of my favourite quotes is the following:

“Life is like riding a bicycle. To keep your balance, you must keep moving.” —Albert Einstein

Positive brainy quotes help me to come down and be strong.

What is a life changing quote or tip that helped you with your anxiety?

One ive seen recently and has had a positive effect on me goes

"We are more often frightened than hurt, and we suffer more from imagination than reality"