The book "Stress Free for Good" by Dr. Fred Luskin and Dr. Kenneth R Pelletier describes
Serenity Prayer:

Grant me the serenity to accept the things I cannot change,
The courage to change the things I can,
And the wisdom to know the difference.

This is a simple but profoundly wise prayer.
I like that very much.

Many LifeSkills tips are given to help the reader to reduce stress and hence improve
your health.  I am continually learning and benefitting from my reading.

There is a Chinese saying:  "Live till old,
                                          Learn till old."

How true!