Has anyone ever had success without therapists?

Personally for me I feel combination approach works best to include the book Brain Lock by Dr. Schwartz and Mark Freeman on You Tube has free resources.

i’d say the best option would be to commit ourselves to genuinely participating in the necessary treatment. i think it’s basic criteria of being a good health professional not only respect the patient’s sovereignty but also to support them to developing their own tools to taking care of themselves. we ain’t no objects to any form care, we must be subjects of it — and that involves advocating for our own needs such as sustaining an open mind and heart to serious support.

Following for sheer curiosity

Ive been having ocd for over two years and for my contamination ocd at some point I actually started to get better but then randomly it came back again. For things like pocd, hocd etc I also managed to overcome and ignore the thoughts for some time but then randomly it will be so convincing that I’ll be back in the cycle. So personally for me it hasn’t been possible yet.

I don't the answer to this. Plus success is different per individual. I do believe it's going to be incredibly difficult alone as a lot of the vital things therapists do is intricate and tailored to our needs. It's hard doing that with everyday stuff, nevermind ocd. I'll be working on something for the next few years to help people manage ocd without therapy but it's a long way off. It will never be a replacement for therapy