I have done a lot of Kripalu yoga. (www.kripalu.org) it is often referred to as meditation in motion. I was undiagnosed when I started but I have found that even then when i didn't know what was going on, that when I was doing the postures I slowly began to focus on the movement and the sensations in my body rather than the invasive, depressive or manic thoughts. By the end of a session, I was very relaxed and calm and able to focus. Obviously not a cure, or substitute for meds, but a good occupational therapy session for sure.

Kripalu is very gentle and appropriate for every fitness level.

Let me know if you try it.