Have you noticed how often we tend to dwell on little things that, in the grand scheme of things, are not all that important? One thing is to worry about a health issue or whether you have enough money to put food on the table for your family tonight. Another is worrying about small stuff we have little to no control over. Here are a few examples: Whether the panel you interviewed with for a new job thought you seemed too interested -- or not interested enough Whether your date noticed you had a small hole in your shirt  Whether your friend is losing interest in hanging out with you because he doesn't seem to call or visit like he used to Most of the things we agonize over can be investigated or resolved with a quick call or email. When you worry so much about things over which you have no control, it builds anxiety, which can adversely impinge on your happiness and well-being. Let things be. Once something has taken place, you don't get a "do over....