Fake it till you feel it. Feelings follow actions. If I’m feeling low, I deliberately act cheery, and I find myself actually feeling happier. If I’m feeling angry at someone, I do something thoughtful for her and my feelings toward her soften. This strategy is uncannily effective.
Buy some happiness. Our basic psychological needs include feeling loved, secure, and good at what we do. You also want to have a sense of control. Money doesn’t automatically fill these requirements, but it sure can help. I’ve learned to look for ways to spend money to stay in closer contact with my family and friends; to promote my health; to work more efficiently; to eliminate sources of irritation and marital conflict; to support important causes, and to have enlarging experiences. For example, when my sister got married, I splurged on a better digital camera. It was expensive, but it gave me a lot of happiness.