I have forgotten the value of metrics in my sports performance. For the last few years, I have been solely focused on improving the baseline systems that make me show up even in the worst of days. Consistency has been achieved. Now the next step is to measure things.
Recently I got a Garmin Instinct 2 watch and have been enjoying the insights in the data that it generates about my performance. It has made visible areas of improvement (sleep quality, stress reduction, recovery time, VO2 max) and informed the decision-making process of my daily routine. I certainly am motivated to improve my sleep score, eat my last meal by 6pm, start meditating, strategize my workouts throughout the week, and focus on nutrition.
What I fear is the obsession with metrics and unnecessary data that gets in the way of just doing things, of just getting things donr. I suppose you need to try things out and see what sticks, what helps your decision-making in the long run.