-Create a Will
-Spend the amount on me/family/friends that would satisfy me. Including traveling, cars, buy few more houses/mansions, sending parents in early retirement, pay for sister's college, making sure all my family members & close friends needs are met, and etc.
-Do personal charity and build schools/free clinics for kids & people who truely need them in some countries.
-Open a restaurant to keep me busy & working.
-Invest the rest and do w/e i want to do with it when I want to.