You're free. Don't take up another job unless you want that. If you want to slouch on your couch, go for it. Want to learn how to sail? You can do that. Want to teach kids how to code? You can do that.

Don't put the money into the stock market -- we've been going on a bull run for 10+ years.

You've got plenty of cash to wait out a next crash.. it's not going to take another 5 years before a next recession hits.

But realistically you'll at some point want to reinvest most of that money into passive, safe(r) investments so that you can book a x% annual return and live off capital gains. (Fun fact; capital gains are taxed lower than income)

Feel free to put some (i.e. $500k to $1m) aside for higher risk investments if you feel like you wouldn't mind the money disappearing or going 50x.

Also: DO NOT JUST GIVE IT TO A BANK -- best way to pay a ton of fees and end up with no (or worse, negative) returns.

Also: (but this is me) I would give back to a cause you care about. Maybe something local where you know the money will have a big impact? Those donations are often also tax deductible (so might as well).