How do I keep up in a fast-moving field without feeling like a fraud?

In a field that changes every week, feeling behind is almost built into the job. There is always a new paper, a new tool, a new thing everyone else seems to already know. That treadmill feeling is real, and it feeds the fear that you are secretly not good enough. But keeping up with everything was never actually possible, for anyone. Let go of the idea that you must know it all. No one does. The people who look effortless are just quietly ignoring most of the noise and going deep on a few things that matter. Do the same. Pick the fundamentals and the pieces your actual work needs, and let the rest wash past. Depth in a few areas beats a shallow race across all of them. The impostor fear rides along because you keep measuring yourself against the whole field instead of against yourself last year. Change the measure. Each month, notice one thing you can now do that you could not before. That is the honest scoreboard. You are not behind. You are learning in a field designed to always feel that way.