I’d be afraid of a treatment like this where you’re sort of different after one treatment. From experience taking ssris, I took one one that worked so well that I had to stop taking it because it removed stress to the extent that I wouldn’t get to class on time or get my homework done before deadlines. Eventually I found a medicine that worked for me. But, if there’s a “before” vs “after” one shot treatment, you have to hope the new you is the one you want assuming you could be stuck there permanently.