Forgetfulness, getting tired easily, can’t concentrate, irritability, teeth grinding, difficulty sleeping, aches, and pains can all be symptoms of anxiety disorder. Symptoms related to getting tired easily make it so we can’t concentrate, etc. Psychotherapy, medication, and support groups are some things to consider in breaking the circle of the feeling of impending doom. Listing all the things that ever make you feel anxious and writing it down to check once a day allows you to find the one main stressor at a time which allows you to reduce general anxiety and gives you the opportunity to work on one thing at a time.
When the first PC and Mac computers came out you could only run one program at a time. The more you added slowed the computer down. We now can run 20 programs at a time with no slowing. Subconsciously we are running 20 or more programs in our own heads which can create high anxiety. Reducing the number of programs running at one time allows us to work in a way that is much more palatable.