Comment by yusukez

Spot on. Minimizing distractions is just one side of the coin. The other is maintaining momentum on the single task at hand.

That is actually the specific problem I'm trying to solve with my first prototype: https://seton.run

It's a very simple Pomodoro-ish timer, but designed to visualize your accumulated effort. Seeing the concrete data of "time spent" creates a positive feedback loop that helps me stick to the finish line.