Take the habit of smoking as an example. Obviously, smoking is harmful to health. It can lead to lung cancer and heart disease. Besides, smoking wastes money. A heavy smoker spends almost as much money every day as he eats himself. So if he can realize the danger and waste, it is likely that he will quit smoking at once. To get rid of bad habits, we must also have strong will. Let's take the habit of smoking as an example again. Take the habit of smoking as an example, many smokers soon got into this habit again. Obviously, smoking is harmful to health. It can lead to lung cancer and heart disease. Besides, smoking wastes money. A heavy smoker spends almost as much money every day as he eats himself. So if he can realize the danger and waste, it is likely that he will quit smoking at once. To get rid of bad habits, we must also have strong will. Let's take the habit of smoking as an example again. Many smokers picked up this habit again soon after quitting smoking.