Not me (alas), but I remember reading an AMA a while back from a Redditor who won the lottery. I think the jackpot was $30 million, and he got … maybe $17 million? He was only in his early 20's, too.
He was basically a checklist for How to Behave If You Win the Lottery. He paid off all his debts, had some fun spending some of it, then got a financial advisor who gives him an allowance of something like $90,000/year. The rest of the money is invested. Any time he's in danger of exceeding his allowance, his advisor calls and gives him shit.