Heart disease. There are many kinds of heart disease. You consult with your doctor and discuss what treatment is appropriate for the problem you have and how it can aaffect your life.
Treat risk factors. The risk factors that accompany heart disease must be effectively treated to prevent further problems down the road. This includes lifestyle changes to address weight and inactivity/lack of exercise, diet changes to prioritize healthy nutrients over bad, and alcohol/smoking moderation. All of the above will help control blood pressure, cholesterol and glucose levels, and vastly lower future risk.