The first one I ever saw, way back when I was in my 20s - retired and we became friends until she moved 1000 miles away to be near her children.

The second one I tried fifteen years later for just a few months - it was not working and finally one appointment I asked her how I would know and she told me I could not just quit - I said watch me and she went to make a new appointment and I said "no" she said "No?" I repeated "No" and walked out never to return.