Work on interesting projects that you want to work on. Do some traveling. Go back to grad school for fun. Learn a new language, sport or talk to girls. Go to your favorite startup or software company website and click on the mugshot of the guy who's in 40's in blue dres-shirt, is that who you want to be when you want to be?
If no, don't get on the VC rat-race; it's just as soul-crushing as the investment banker's rat-race except less lucrative.