Once upon a time, I worked out for two straight years and enjoyed the results. Then, I took a break from the gym and decided to return after five years. My first week back was terrible; it felt like being hit by a truck. Once again, I quit and got back to the gym a month later. Does this sound familiar? Yes, breaking a habit is not easy, but it is possible. So, how do you break that old habit? Here are three simple (not easy) steps to take.