Read the last few chapters of "the simple path to wealth". In a nutshell, invest most of it in a broad index fund and if you can live with 4% of the 8 million,

Read the last few chapters of "the simple path to wealth". In a nutshell, invest most of it in a broad index fund and if you can live with 4% of the 8 million, you will not need to work again and you will leave your children more than enough.