When you are working for yourself, not as a freelancer, but on your own things, it often happens that you make most of your yearly income in a few days of the year. It is crazy how power law distributed it can be...
The other days are learning, growing and relaxing, so you can actually have those few days.
The first thing is to decouple your production from rewards based on time. Those few days also have only 24 hours each.