Everyone desires to be healthy. Sometimes it is difficult, especially when you crave foods that aren't good for you. Some people crave for sweets, others for salted fried snacks. Then we have the cola addicts, who must have their regular quota everyday or they go into depression. The cigarette, alcohol and chocolate lovers are a breed apart. It takes a lot of discipline to get over these addictions. You may sincerely desire to give up these cravings but you may discover that you remain powerless to the demands of your taste buds. Which of the following is the point that the author is trying to make?