I dream of retirement, but I bet I would make the mistake warned of by a poster here and over-commit myself out of restlessness to a bunch of things I will have to perform regardless of how committed I am to them.
I think the best advice is to give yourself time to adjust before you end up committed to a whirlwind of stupid activities (some undoubtedly foisted on you by people who are too busy working to to them) which will end up making retirement just more work.