The past is gone, never to come back. Whatever you did or could not do is history; you cannot go back in time to do or undo it. Brooding on the past is futile, so is being anxious about future. Focus on what you can do in the present because the present is creating your future.

The Ancient Sage

It's not enough to learn how to ride, you must also learn how to fall.

Mexican Proverb

A closed mouth catches no flies.

Miguel de Cervantes

Be content with what you have; rejoice in the way things are. When you realize there is nothing lacking, the whole world belongs to you.

Lao Tzu

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

Jonathan Mead

Some men go through a forest and see no firewood.

English Proverb