When we were schooling, we have timetable for our lessons showing us when a particular lesson would take place. After graduation, I believe all of us should still work out a personal timetable to do all the things in all spheres of our life so as to lead a balanced life.
I know of many people who equate life=work and they epitomise this by working and working even through the wee hours and weekends. This will do much harm to their health.