1. Watch others, who have much more than you have, and emulate their lifestyles, trying to prove that you’re “just as good as they are.
Surprisingly, in my experience, the richest people I know don't spend much of it - you don't get rich spending all of your money
I was shocked the first few times, but it seems that they value every dollar they earned a lot and so it doesn't get spent quickly.
It's interesting to see how the "rich" spend their money - I've seen many for whom the biggest expenses they have are their kids' education while they all drive beaten down cars, live in an okay size home, don't take very lavish vacations, etc.
I don't have too many samples to examine from, but maybe when the person crosses the $100MM+ wealth range, things change and they start spending a bit more with private jets and such, but until that range they seem to not want to spend it all. Maybe part of the reason is that while they may be "wealthy," they don't have a lot of cash because it's mostly invested.
Edit: I'd say this goes for people that earned it - not necessarily those who inherited it. I don't think money changes people, maybe it just brings out their true self though.