I'm depressed after discovering i have cardiovascular disease. what should i do?

Understand, manage: First, take a deep breath. There's a huge spectrum in significance and implications of this diagnosis. It depends on the exact diagnosis, its severity, its prognosis, and what management options exist. Confirmation by second opinion may be indicated, especially since you're upset. You are not the first or only one with this diagnosis, so support from others will be available. Talk to your doctor.

See below: You can also contact a health psychologist, someone who specializes in the effect of medical illness on overall functioning. The health psychologist will guide you through learning coping techniques with your illness as well as how your emotions impact your overall health. You will also be working on how to manage your illness based on your personality characteristics. Good luck!