I had a heart attack and now my left eye droops considerable and my right eye is wide open. How do I fix this?

It sounds like you have a ptosis.  This is not caused by a heart attack.  It can be fixed surgically once you are medically stable with  your heart.  If you are on anti-coagulants, you need to talk to your cardiologist about stopping this for an elective surgery.  

If you have a stent and were placed on plavix, this can put a hitch in your get-along.  Trying to perform ptosis surgery on an antigcoagulated individual is a tough deal.  Do your homework and find an experienced fellowship trained oculoplastic surgeon to assess you and evaluate your situation and what makes sense.

It appears from your description that you have right upper eyelid ptosis. You need to see an oculo-facial plastic surgeon to determine this for sure.