1. Quit smoking. If you smoke, you are more than twice as likely to have a heart attack as nonsmokers, and you’re much more likely to die if you do have a heart attack
2. Get active. People who don't exercise are more likely to get heart disease, and die from it, than people who are active. Check with your doctor before starting a new exercise program, especially if you aren't active now. She can tell you what you can do.
3. Follow a heart-healthy diet. Eat foods that are low in fat and cholesterol. Just about everyone should eat more fruits, vegetables, whole grains, beans, nuts, legumes, and other plant-based foods. The fiber is good for your cholesterol, and you'll get vitamins the natural way, from foods.
You can still eat fish (especially salmon or tuna, which are high in good-for-you omega-3 fatty acids), poultry, and meat, but make it lean and keep the portions modest. Also limit salt and sugar. Most people get too much of both.