“God 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.“

A person can be happy or sad about a rainy day but that person’s thoughts is not going to affect the rain, it will only affect them.
A person can be happy or sad about another person’s actions but their thoughts is not going to affect the other person, it only affects them.
A person can be happy or sad about their own actions; now that’s something that’s within their power to change because they have control over their own thoughts and attitudes.
“Absolutely nothing of importance can be changed when you need sleep.” ~