Anyone had by-pass heart surgery?

Recently found out I have had a heart attack without knowing it & now I need by-pass surgery.
Having the op in mid November and so far I'm feeling pretty laid back about it 'coz there's really no option.
Would like to hear from anyone who's been through this. What I would welcome is advice on
- preparation, anything you did, or wish you'd done before the op
- what I can expect in the post-op period and during recovery, plus
- advice on what to do / not to do to make recovery easier.

============
Cosmetic Surgery|Cosmetic Surgeon