Good for you! Glad it worked and that your T was supportive. Of course, you were really ready, weren't you!?

I wouldn't advise anyone to do this on their own, as they can end up worse than before, and quite traumatized. Exposure therapy needs to be that, imo, therapy. Mere exposure doesn't heal us. However I suspect you had a good handle on what to expect and how to manage, along with two doctors who were there just in case.