Hi there, I'm not religious but I did study and use AVRT a couple of years ago. It helped. I still use some of the techniques. But I also use some of the SMART tools, go to WFS meetings, and have been to AA meetings more recently. I'm working on realizing what my higher power actually is. So... my opinion is that you can use whatever works! Use any and all things that work! The more the merrier... Lol.
ETA: I think I figured out AVRT intuitively and was using it before I was aware there was this technique. It just seemed like common sense to me.