Keep your faith in the Lord and trust the cardiac team. This is what they do. I had a quadruple bypass in 2003 and I'm now 77 and still kicking around. I know it might be easier said than done, but do not dwell on the negatives prior to the surgery. Those, you can't control. Do trust the professionals doing the procedure. Look forward to waking up after surgery and giving your loved ones a hug and a kiss. Keep the faith brother.