I've done a lot of neurofeedback, a subset of biofeedback. It seems to have had a strong positive effect on me. Neurofeedback, and perhaps all of biofeedback, pushes you in some direction so make sure you determine if you would indeed be better off moving as such.
Could you be a bit more specific about the positive effect?
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.