To go deep. To get crazy. To stay in the zone and cut off your ties to the outside world. It can be complicated. It can be exhausting. But it also can lead to great things. Get obsessed. Get absorbed. And really get after it. You can watch TV when you retire and you can sleep when you’re dead. Although, I do function poorly on lack of sleep and the thought of pulling an all-nighter is a non-starter for me. So yeah, know your limits and then get obsessed.