It happens in every career in every field; I'm 37 and have been a PM of an ai-driven product for a while now.

I am starting to care more about corporate leadership and using money earned to enjoy life than the technical bits I've been cycling around for a while on

Some ideas that may apply to you

1. you could focus on people management and direct teams on larger projects
2. you could try and find companies with new interesting problems to solve (MLOps for LLM models in firms like Jasper, or OpenAI, or Cohere, or perhaps HCI loops between humans and UI-embedded LLMs like at adept.ai ?)
3. you could find a truly deep R&D job on a crazy new area and go at something novel. (i personally would love to spend 2-3 yrs exploring neurosymbolic computing or quantum computing once i get tired of corporate politics; haven't decided yet)
4. etc.

No one job is a constant set of discovery and joy and focus. Everything gets old after a while so be prepared to refresh your career again in 3-5 yrs.