I think everyone at some point can relate to what you're saying. That's exactly why I try to live with purpose and do things with purpose. It has to be bigger than just the money or else we'll get burned out and disappointed. Trust me I learned that the hard way.
Find your purpose, find your flow.
https://www.treehugger.com/culture/ikigai-japanese-art-finding-ones-purpose-life.html
My purpose is to live a free life, create a small community of free people and live in harmony with the 9 noble virtues.
Glad to see you Earl!