Do not anticipate trouble, or worry about what may never happen. Keep in the sunlight. — Benjamin Franklin
Every day you can find something to worry about. Maybe even many times a day for some people. Some things you control. Some things you do not control. Some things for sure will happen. Some things may never happen. It only makes sense to worry about things that may happen that you have no control over. If you have control, then do something about it instead of worrying. If you have no control, then worrying does not help, so stop worrying.
Mark Wesley Christiansen 