There is nothing that you can do now that will reverse the results of the colonoscopy. Colonoscopies are routine examinations that occur in medical offices hundreds of times a day. You can try to center your mind on positive thoughts and visualise a healthy body and a healthy colon. You might also consider consulting a licensed nutritionist or your general practitioner for help in planning a more healthy diet with plenty of organic fruits, vegetables, and other whole foods (grains, legumes, proteins).