I have 3 kids and get up at 4:30am every day to work on my own stuff. From 7am they're awake so I spend time getting them ready for school, etc. Then I go to work. Over the years I've found that getting this going consistently is the key. Even if you only get one good hour in each morning it builds up to quite a lot of satisfying work very quickly.

It did take a few years to become consistent though.