“We cannot make our days longer, nor can we add additional hours to our nights. But we can maximize our usage of time by regarding each segment of time as a world of its own. When we devote a portion of time — whether it is an hour, a day or a minute — to a certain task, we should be totally invested in what we are doing, as if there exists nothing else in the world.”  

–Rabbi Yosef Yitzchak