1. Have Norm Abrams renovate my house.
2. Hand the rest to a Swiss financial manager. 
3. Tell no one. I'd lie and say a distant relative had died and left me just enough to renovate the house, or say I'd gotten a one-time bonus at work for some project, but only enough to fix up the house. 
I do actually have a family member who did not win the lotto, but her eldest daughter was killed in a horrible accident, and the company that killed her was found to be at fault. Her eldest daughter was young, pretty, smart, such that the judge called both lawyers into his chambers and told the company lawyer that they should just write a check now because they would lose big-time, no question. The settlement was in the multimillions. 
She bought a big house for herself, her teenage kids, and her in-laws. Within 10 years, both kids had grown up to be losers (one has been arrested for drunk-driving his car into a tree so often he can't get a license anymore, the other dropped out of school and can't hold a job for more than 6 months), her in-laws had wrecked their suite and part of the house so badly it cost $50,000 to repair, and her hubby divorced her. She had to sell the house at a significant loss. 
All the money paid for was a few beach vacations, her drunk son's lawyer and wrecked cars, some outfits for her grandkids (which were literally worn once and thrown in the garbage, as the daughter reasoned that "Mom's rich, she'll buy more"), and her divorce. 
In contrast, I have an aunt whose hubby ran a startup software company, which he sold in the 1990s. They have a few million, which they earned by their own sweat. They only let slip recently that they were that wealthy when my mother asked them about their plans for retirement. They did not change their lifestyle, kept their house and only made a couple of renovations, and kept working. They are still married, still happy, and have a pretty good life with lots of hobbies.