If you really know... what you want and how to get there, then everything else really falls into place.
To make films is as boring as watching paint dry - you usually have to do little tiny bits here and there. You go off waiting for lighting, you come back - the energy dies. You hope you can find someone who can keep it going.
I don't have a very disciplined approach to practicing or anything, but I do tend to have a guitar around most of the time, which I strum on most of the day.