Lots of good advice coming in the comments.

Conceptually, the best thing you can do is protect your money from yourself (like you mentioned about wasting it slowly). That means socking it away in places where you no longer have it and it works for you, like Roth/401K/I bonds. That also means NOT changing your lifestyle: no new credit cards, no change in entertainment habits, etc.

You probably already know this, but I would also highly recommend keeping news about the settlement to yourself.