1) Obviously, the first step is to quit smoking. If you do so, in a
few years your risk of cancers and heart disease will dramatically
fall, although not quite as low as it might if you had never
smoked.
2) Your second big risk factor is diet. Dean Ornish's studies show
that moving to a low fat vegan diet is one of the few documented
ways of reversing the progress of heart disease.
3) Various and sundry antioxidants, especially Vitamin E, have been
shown to have beneficial effects in the long term, although I have
no idea if the literature has any evidence for what their impact
might be on someone who is already suffering from heart disease.
4) Moderate exercise is also in order, according to the experts.
and finally,
5) Have you made cryonics arrangements for yourself yet?
Perry