"I feel better, I don't need my medicine anymore and I don't need to follow my doctor's directions anymore." That is human nature.
This sort of thinking killed my father. He had three by-pass surgeries. After each one he would eat right, quit smoking and take better care of himself. At some point he would start smoking again and eating fried, fatty foods high in chloresterol. Then he would have another heart attack. He made it three years after his last by-pass and dropped dead of a massive heart attack.