There are many avenues to addressing our mental health, and photography is one of those avenues. You are in control of your therapy. With a simple point, compose, and shoot. We can utilize many subjects, from the comfort of your own home to the street and nature itself. Start with what interest you instead of the technical aspects of taking photos and focus on entering the mindfulness of photography. Below are a few links that helped others with the benefits of photography with mental health.
https://positivepsychology.com/mindful-photography/
https://www.photographerswithoutborders.org/online-magazine/bryce-evans