A beautiful short film on the subject:
In a 2012 interview, the filmmaker Temujin Doran offered this bit of advice:
Q: Your documentary filmmaker’s “Ten Commandments”:
Temujin Doran: I’ve only been doing it for just over a year – so I feel justified in offering only one: I don’t believe all those people who say that if you want to get into filmmaking, you have to want it more than anything else. I’ve heard so many people from the industry giving these lengthy speeches about how filmmaking requires extreme dedication, and how you must sacrifice all your other interests in order to do it.
In my opinion, a part of what makes one a good filmmaker is all the things they do outside of their filmmaking. Of course filmmaking require dedication, but any other creative or adventurous things you do will help to improve your films, be they documentary, narrative or experimental, infinitely more than just learning about filmmaking processes or camera settings.
(Hat tip: Kottke)