How do you cure congestive heart failure?

Cure is wrong word: as CHF can be controlled and compensated. Very few are "cured" if you remove the reason for the heart failure (and the patient gets "lucky") as in alcohol induced cardiomyopathy or ischemia or post partum cardiomyopathy and a few with viral etiology. Most important: CHF can be prevented by treating early the disease conducing to it (like hypertension, heart attacks, diabetes, smoking, etc)