As a father, you need to examine and shift your priorities. If you've been devoted to your career, it may have to take a back seat to provide you with quality time to spend with your children. If your boss has children, you could get some empathy and leeway. It's not always a career sacrificing move to put your children first. Try to negotiate for flexible hours or different responsibilities that don't require all your waking time.
If your job offers flexible working hours, make good use of them. Come home early, spend time with your children, then catch up with two hours of work once they are in bed. Alternatively, you can do the extra hours before they wake up in the morning. Find gaps in your normal daily routine for work-related phone calls. Try working at home for two days a week if your job allows it. You will need a secluded room in the house to do your work, away from distractions.
Your wife probably also has a busy working schedule. Try to share out responsibilities and do house work and child care in shifts. Also, the two of you do not have to do everything yourselves; if you can afford it, hire a gardener or domestic worker to help out once or twice a week.
