Life moves fast. There is overwhelming pressure to stay on top of technologies, and we feel like we need to know everything about our craft to be a productive programmer.  

Here's the big secret though: You don't need to.  

Learn about how to apply the principle of "Last Responsible Moment" to how you approach work, including reducing cognitive load, deferring learning, asking good questions, understanding cost vs benefit, logical and risk fallacies, and how to make good (or "good enough") decisions in the face of limited data. Know the rules so you know when to break them.