I've tried every productivity hack out there—Pomodoro, time blocking, even those weird focus apps that lock your phone—and I still can't figure out if the real problem is my discipline or the fact that I'm just not motivated by my work. A friend swears by waking up at 5 AM, but I'm more productive at midnight. So, is personal productivity actually something you can train, or is it mostly about matching your natural rhythms to the right tasks? I lean toward the latter, but I'm not convinced it's that simple. What's your take?