I used to be just like this, (and still am in some ways) where I am most productive at night. I enjoy the peace and quiet when no one is around to bother you. During the day there are endless distractions but at night that all goes away. As I said, I used to be like this, now I have a baby and being a night owl is no longer an option. I have been progressively migrating towards starting my day at 7am, and I have to admit, I enjoy it. Yeah I've had some great late night hacking sessions, but being able to start working early and be done by 5 or 6 is very nice.

I find it much easier to separate work from home life when I start my day with work, as opposed to spending all day knowing that at some point I will in fact have to get to work. I've found that having things hang over my head like that really messes with my motivations, I prefer to take the approach of work or don't work, but nothing in between.

I also work from home, which is not only complicated by the fact that I have a baby at home, but also that my office is sitting off in a corner in the living room. The best solution I have found is to find a way to isolate yourself and convince your mind that you are in the same mode as if you were working late at night without anyone around. I have a nice pair of headphones that block out most noise, and I purchased standing paper room dividers so I can 'shut' my door and focus on work.

So while I've had a lot of fun being a night owl hacker, I find I live a more balanced productive life getting work done first and early. As they say, business before pleasure, with a personal corollary of don't combine the two.