Anxiety displays itself in a few diagnostically distinct ways. Generalized Anxiety disorder, in which concerns reflect any of the major domains of life—work, love, money, health—is most common ...
And it works so well because of a psychological process called cognitive defusion, which is commonly practiced as part of Acceptance and Commitment Therapy (ACT) for anxiety and depression.
Uncertainty about lots of outcomes you care about and are responsible for is a perfect setup for anxiety. All you can do is think about them without being able to act on them. For most people ...