With the past, I have nothing to do; nor with the future. I live now.

Most of the weight you carry in an ordinary day is not in the day. It is in a replay of something already finished and a rehearsal of something that has not arrived, both of which feel urgent. The hour in front of you is the only part of your life you can actually handle. That is not a small territory; it is the whole of what is available.

Pick one stretch of the day and stay inside it. When your mind travels, note where it went and come back without arguing. An hour lived straight through is worth more than a day spent elsewhere.