First, look inside. What is causing you to worry? Be specific. (For some situations, this may be readily apparent; other times, you may really have to think about it.)
Writing in a journal or talking to a friend about it can help you sort out your feelings.
Then, decide what action, if any, should be taken. Try to figure out what part of the situation is under your control.
Assess the problem to see whether the threat is real, or if you are blowing it out of proportion.
If the problem is just a hypothetical situation or a worst-case scenario, decide if it is really likely that your fears will actually come to fruition.
Next, come up with a plan that tackles the part of the problem that is under your control.
Taking action to protect yourself is a good way to channel nervous energy and provides reassurance against your fears.
It is, in most cases, the healthiest response to realistic fears and worries.
Once you have done all you can, just let it go. Like everything in life, this is easier said than done,
but with practice, you can get pretty adept at letting go of excessive levels of stress and anxiety.
You can do this by focusing on something else, reminding yourself of the solutions you have worked on, or trying some stress management strategies that can help you feel more centered and at peace, such as prayer or meditation, journaling about your feelings, or listening to music.
Getting regular exercise has been found to be especially helpful in combating the physical effects of anxiety and stress