Very few entrepreneurs are able to let go. At 5 p.m. At 3 a.m. On the weekends. On your wedding day.
It can consume you, particularly if you've tied its success directly to your ego.
Hard for me to not think about the late nights with the laptop. Even after getting married. Even after having a kid. Being tired as hell and not playing with the kid. Not taking the wife on a date in years.
Lot of success stories. Lot of untold cautionary tales.