I'm all for this, I think it makes a big difference to have the right mental attitude.
I did self-hypnosis for the birth of my second child, and I took no pain relief.
Focus on the desired result: they say to get slim, think like a slim person, and you will eventually/naturally choose the food that will make you lose weight.
For P good thing to say would be: "my skin is soft and smooth"
ah....bliss!!
CoB