A lot of career-related writing targeted towards women emphasizes work-life “balance.” So you should really take some time out and nurture yourself, right?
Actually, I’d keep that to a minimum right now. “Balance” is not for the young and sprightly — instead, think of work-life balance over the course of your entire life. Do you intend to retire some day? Would you like to have a baby and invest substantial time in caring for it? If there is some phase of your life during which you will be working 15 hours a week, then maybe you should work 60 now. More