Hopefully, Larry will find he can still use his tremendous abilities, even sitting back with his feet up. Now's the time to have FUN doing extreme amounts of good, near and around the world, with his money. If I was his adviser, I'd recommend sitting in an easy chair as he recoups and finds how to have a little slower-paced life. At the same time, I'd suggest finding groups and causes which lift people up out of the most terrible and desperate circumstances--where his money could be the very difference between life and death. (the trick is to find the groups that really help people help themselves, not just line their own pockets)
The joy and deep-down satisfaction he could get will far, far out-balance the loss of his usual break-neck speed of life. Go Larry. You have MONEY, and that means you can do good on a grand scale.

I can give him lessons on chilling out if he needs them.

I am retired now and often ask this question of people my age--When is enough-enough? The old saying apparently goes here that He that has the most WINS. Slow down Larry and enjoy life please. My impressions of you are that you have never been a geedy person, just a driven soul. The contest is over, you have been a tremendous success, now let others have their turn and enjoy the fruits of your labor. Even if there would be some kind of a financial loss or whatever, you can't take it with you in your next world anyway pal.

Thank you, Doug, for the detailed and compassionate mini-biography about Larry Miller. If more of us would try to emulate successful businessmen instead of wasting time criticizing the wealthy, we would all be happier people.