All habits are man-made. To break a bad habit is to acknowledge your desire to quit and to cultivate an attitude of avoidance. Rid your environment of the offending substance and all related items. Daily habits are an outgrowth of our beliefs. Educate yourself and revolutionize your thoughts to help you change your living habits.
Enthusiasm is what generates change.
Whatsoever a man soweth, that he shall also reap. Habits are ways of behaving that become ingrained by repetition. You do something so often that it becomes automatic. With motivation and concentration, you can learn to break bad habits. People are moved to change for a variety of reasons.