Proverbs 15:13 says, “A merry heart maketh a cheerful countenance: but by sorrow of the heart the spirit is broken.”
What’s another word for a cheerful countenance? It’s a smile. Someone said the following, and I think it is incredible:

It costs nothing, but creates much good. It enriches those who receive it without impoverishing those who give it away. It happens in a flash, but the memory of it can last forever. No one is so rich that he can get along without it. No one is too poor to feel rich when receiving it. It creates happiness in the home, fosters good will in business and is the countersign of friends. It is rest to the weary, daylight to the discouraged, sunshine to the sad and nature’s best antidote for trouble. Yet it cannot be bought, begged, borrowed or stolen. It is something of no earthly good to anyone until it is given away willingly.

I love that. When you dress up in the morning, don’t forget to put on a smile, and don’t be ashamed of your sense of humor! Why not try it right now even if you’re all by yourself. Now, don’t you feel better?
LWF.org