The first thing I will do if I ever become filthy rich out of nowhere is hire a lawyer, or a legal team, who specializes in wealth management, and a properly licensed financial advisor.
Gonna make damn sure I get all of the tittles and crossbars in place before I write even a single 5+ figure cheque to anyone for any reason~
The money is not mine to spend until I have a solid plan laid out to properly manage it for the rest of my & mine's lives.