What crypto resource actually helped you become a better investor instead of just chasing hype?

I've been in crypto for a few years now and honestly most of my mistakes came from following influencers, Twitter narratives, and random YouTube predictions.
The biggest change for me was when I stopped looking for the next 100x coin and started focusing more on risk management, portfolio allocation and understanding market cycles.

I'm curious what resources have actually helped people become better investors over time. Not necessarily signal groups or trade calls, but communities, newsletters, research platforms, books, podcasts, etc.
What made the biggest difference for you?