Here’s how this usually works for the core-competency parent: Treat the hours between 5:00 and 8:00 p.m. (or 5:30 and 8:30, or 6:00 and 9:00 if you’ve got night owls) as sacred. This is family time. Block it out on your calendar. Use it to plan activities with your kids that leverage the things you do best. But then, a few nights per week, open up the hours of 8:00–10:00 or 11:00, after your kids go to bed, for work.

