How do you go from thinking like a developer to thinking like a CEO?

I’ve built and launched a real SaaS product with paying customers, but I still catch myself thinking mostly like a developer — focused on features, architecture, and polish — rather than growth, sales, or strategy.

For those who’ve made this transition: how did you train yourself to think like a CEO or founder instead of a builder?

Any essays, habits, or mindset frameworks that helped you make the shift? (e.g. Paul Graham, Jason Cohen, etc.)