As someone who is young i am worried about my heart because although it is healthy i am overweight, what diets should i pursue to help lose weight and have a healthy heart. i am eager to help my heart since i get a lot of anxiety about my heart?

Before dieting get checked out. See your GP (if you don't have one, find one) for a full physical and baseline lab tests. Your Physician can then craft for you a safe and effective weight loss program that will not place stress on your heart. Note also that your Physician may want you to consult with a Nutritionist.

How much you eat is more important than the type of diet you pursue. You need to reduce your intake to induce a negative caloric balance. Also gradually increase you physical activity. Joining a support group like Weight Watchers may help.