I hit a similar point (without the 8 figure sale of my startup) in my early 30’s. My mentor advised me to go get a copy of “Illusions” and hike up a local mountain to read it. It didn’t get me all the way to where I am today some 20 years later but it certainly changed my perspective on things in a foundational way.

Sounds like you need a challenge. Kinda like Steve Jobs walking back into Apple for $1/yr salary. Gun to the head + Guns to the deck, speaking metaphorically.