Find an early, exciting startup that's growing fast! As your post suggests, personal motivation often correlates with a startup's momentum. When the team is consistently winning, the effort feels worthwhile. :)
Plus your experience from the last few years would be really valuable to other early-stage startups, and enable you to grow quickly as a leader.
I'm the CTO at Zippity, a seed-stage SaaS business. We recently got new funding and are hiring 3 more software developers (doubling our team). https://www.getzippity.com/careers
Feel free to email me, to hear more or just to chat. Email in my profile.