Okay, I believe I can say something about that, because I've just finished my 9th novel in German - where only one [1] is (self-)published so far, though -, have published a little hobby music album [2], and also used to sell a little shareware program [3] next to my full-time job. So I'm definitely not super-productive but still relatively active, even when most of my projects never see the final daylight.
In my experience, if you find something that you really, really like and manage to reserve the necessary spare time, then you will become productive automatically. That could be anything, from sword smithing to rocket construction. If your projects persistently fail or die, then you're perhaps already too busy with family or daytime job, or maybe what your doing is not really the right thing for you. Just do it for the fun, never for money or fame.
In my experience, if you find something that you really, really like and manage to reserve the necessary spare time, then you will become productive automatically. That could be anything, from sword smithing to rocket construction. If your projects persistently fail or die, then you're perhaps already too busy with family or daytime job, or maybe what your doing is not really the right thing for you. Just do it for the fun, never for money or fame.
Self-advertisement: [1] http://richard-loewe.de [2] https://ericspace.bandcamp.com/releases [3] http://peppermind.com