Hi there J$k3r0!
i know you wont try to be rude and i see that nobudy answer your quastion.
endlessnes give you respected answer about the diet but still there much to add to this topic.
about the diet, the more you restrict yourself with what you eat and how you live and terms of food and sex, and become more and more like monks from ttibet or so, the more self control you gain about your life and thats why you feel even better then with the ayahuasca, there's a big connection with spirit uplifting and fasting/restriction.
the combination of selfcontrol and ayahuasca can bring you very high in expirience your concesness.
in my expirience the first time i drink ayahuasca i took a week of and fasting for 3 days with only air to consume(no water and no food), ater i have a day that i eat rally small amount and then in the day of the ceramony i did my reiki session on the morning and a SEE A JAGUAR coming in front of my and i was comletly sober!!! the ceramony was extreamly powerfull and enligting and i didnt even purge! so thats being said about the importency of the diet.
about the rollback, you can see that in other percpective thats empower you,
surly you have much to learn in the subject that you dealing with and that isnt rollback, you figured some thing about this situation and now your ready to dive deep in your understanding,
its a gift not a rollback because now you can look this subject from point of view that you wont have before.
btw you NEVER rollback, you always riched a HIGHER state of mind and NEVER lowers stat when you was before.
hope thats been helpfull to you and if not please write whats not clear yet.
though the minds may be different, the body forms may be different
it is through the heart that we recognize our spirits are one.
everything im writing is a complete fiction and it is only a reflection of my imagination.