Be content to act, and leave the talking to others.

Baltasar

Never look back unless you are planning to go that way.

Henry David Thoreau

I will be calm. I will be mistress of myself.

Jane Austen

Sometimes the easiest way to solve a problem is to stop participating in the problem.

Jonathan Mead

That the birds of worry and care fly over your head, this you cannot change, but that they build nests in your hair, this you can prevent.

Chinese Proverb

To bear and not to own; to act and not lay claim; to do the work and let it go: for just letting it go is what makes it stay.

Lao Tzu