The serenity prayer of Reinhold Neibuhr invokes acceptance of what you cannot change, changing what you can, and possessing the wisdom to know the difference. The idea is a good model that covers a lot of ground, but determining the difference between what you can and cannot change isn't always easy. Here are some things you do have control over.
Marilyn Miller, MS, LPC ~ Psychotherapist
...Delighting every day in helping people find peace in their lives, relieving anxiety, depression, and promoting self-care.