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I remember the day I realized my brain had a budget. Not a metaphorical one—an actual, measurable budget of cognitive resources that, once depleted, made me functionally useless for complex thinking. Your brain has a limited capacity—roughly four items at a time. Cognitive load management isn’t about doing more. It's about reducing what your brain has to process. It was month three of my PhD. I’d spent the morning analyzing data, the afternoon in the heated lab meeting, and t