[jstewartmobile]

I'll second this. If you do brain work to pay the bills, there probably won't be enough left for your own project.

I believe there was some studio guy who once made the same observation about musicians: the ones who had low-mental-effort day-jobs eventually made it. The rest backslid into white-collar wage-slavery.

[jonathanmv]

Those are interesting cases. Definitively the will power works as a muscle and has limited resources. Thanks for your comment