I take it we're thinking along the lines of winning LOTTO and collecting, say, 15 million.
There's an old soap ad that used to appear on television that said it all for me. The couple and their children are so rich they need never experience winter. When winter is about to arrive they just jet off to where it is summer.
Apart from avoiding the cold, being rich is about freedom to choose your own path in life. You are not restrained by having to make money. What you are restrained by, unless you are an idiot, is having to keep your money. You can best do this by keeping it in circulation and possibly by dividing it between a number of banks.
As for your own choice of life path, you can spend months instead of years discovering where your talents lie. You think you're a writer? Then write and invest in your writing. You think you're an artist? Have a go at that and invest in your art. These of course are now affordable sidelines to making money but if you have millions then these sidelines are okay whether they make money or not.
As for recreational activities, if you like to fish the world of fishing is open to you.
All up, don't be one of those those dodos that blows the lot within a year on useless junk and then cries on the shoulder of some current affairs hostress.Take it easy, take it slow and get plenty of advice.