I know everyone is unique, etc. etc....but just my own two cents here (as someone who is recovered). I did try a FEW times to make it worse, to push INTO the fear, etc...and I am telling you, people, I can still remember the damn days of the week and the weather and what I wore when I did it, lol....it was HORRIBLE each time.
People can say "oh, you can't make it worse..." well, they haven't met ME, lol.....I do realize, of course, that you cannot REALLY make "it" worse in the sense that you cannot drive yourself insane or do any permanent damage to your brain, etc....but you sure as hell can make yourself freak out a thousand times worse.
IF others have success with this method, God bless you, but I almost thought I was going to run to a hospital after one try of that (and this was under a psychiatrist's suggestion by the way). It was a nightmare for me, and hey, I'm no idiot. I'll apparently only do something 3 times before realizing it's torture.