Heart disease is the leading cause of death and a major cause of disability. Even if you've had surgery or take medicine to help blood flow in your heart, you need to adopt a healthy lifestyle to control your heart disease, prevent a first or second heart attack, and increase your chances for a long and an active life. Making lifestyle changes isn't always easy, especially if you have many unhealthy habits or are not feeling your best. Also, people with heart disease are often depressed, which can make it hard to want to take care of yourself. But managing heart disease can be done with good medical care, a healthy lifestyle, and the support of your family and friends.