In this period of time, I have been able to:
- Quit my founder position at that startup (thus avoiding potentially being tied to vesting or retention clauses, in case of an acquisition)
- Own my house, and invest in a few other apartments, which turned into a little side business with great margins
- Start a new company investing my own money, and not requiring a salary
- Travel and live in a few different cities as I build the new startup
- Completely forget about the price tag when buying small-ticket things: a taxi ride, asking for an extra plate, an occasional flight, paying a round of drinks
It's not as it money made me happy by spending it, but it did remove a lot of the constraints I had before. It's made me feel like the default state would be to be carefree and happy, and as long as you can keep the worries and the stress away, everything will go alright.
As a new worry, I now spend a lot of time thinking about how to reinvest it wisely and continue living like this. It's not overwhelming, and it's not very different than what doing my finances felt like before, but doing it a larger scale adds a new dimension to it.