It looks like something that cannot be achieved by anyone who has to care about anything else but his/her job. The author says that he has a wife and a daughter

It looks like something that cannot be achieved by anyone who has to care about anything else but his/her job. The author says that he has a wife and a daughter, yet it looks difficult to me (I have two kids) to meet such a schedule. My alarm rings at 6:30 am, and for the next two hours I am busy making breakfasts, preparing kids and bringing them to school; at night I never free myself before 9:30 pm, so there is really little time to study, especially that amount of material. Maybe I'm limited and I have time-managing problems, so I'm interested to know the experience of other dads and moms.