I'm the same I'm a night person. When I was younger I operated the same as you. Chatting on irc during worktime and in the night do the work at home. But after marrying and getting kids I need the night time to rest...

Beste would be I work at home so during the day time I can take a nap. The kid wakes up early. Bring him to school. I take a nap. Pick him up again take some time out with him and when he sleeps I work. But because I have to sit at work I have to work during my least productive time. Because I don't have the energy to do 24/7.

So before marriage and kids I had 2 responsibilities. Going to work and actually working. But after marriage I had more and I couldn't cater it.