Annie.

I suggest you start reading books on mindful (or transcendental) meditation and developing a daily practice. 20-30 minutes per day is all it takes. This is how I cured my anxiety. Meditation will allow you to stop these recurring negative thoughts and emotions and see things more clearly. You will have much more energy instead of wasting it on anxieties of these sorts. Try the book “Mindfulness in plain English”…

The articles on tinybudda are encouraging but I agree do not teach you “how”