Leonard Cohen on Fulfilling Work

"It has a certain nourishment. The mental physique is muscular. That gives you a certain stride as you walk along the dismal landscape of your inner thoughts. You have a certain kind of tone to your activity. But most of the time it doesn’t help. It’s just hard work. But I think unemployment is the great affliction of man. Even people with jobs are unemployed. In fact, most people with jobs are unemployed. I can say, happily and gratefully, that I am fully employed. Maybe all hard work means is fully employed." 

I poached this from Brain Pickings.