Do you realize that whenever you feel yourself getting anxious or frustrated by something that is beyond your control, stop? There is nothing you can do. Instead, focus on the things you can control.
Understand that there is always something you can control, and it always beats complaining or worrying about those things you cannot control. Look for it, and you will notice a difference in your attitude.
Beginning today, the more you begin to focus on only those things you can control rather than on what you cannot control, you will discover that the quality of the life you will live will improve quickly.