David Heinemeier Hansson

“Workaholics don't actually accomplish more than nonworkaholics. They may claim to be perfectionists, but that just mean they're wasting time fixating on inconsequential details instead of moving on to the next task.”
― Jason Fried and David Heinemeier Hansson, Rework

“Ignore the real world
“That would never work in the real world.” You hear it all the time when you tell people about a fresh idea.
This real world sounds like an awfully depressing place to live. It’s a place where new ideas, unfamiliar approaches, and foreign concepts always
lose. The only things that win are what people already know and do, even if those things are flawed and inefficient.
Scratch the surface and you’ll find these “real world” inhabitants are filled with pessimism and despair. They expect fresh concepts to fail. They
assume society isn’t ready for or capable of change.
Even worse, they want to drag others down into their tomb. If you’re hopeful and ambitious, they’ll try to convince you your ideas are impossible.
They’ll say you’re wasting your time.”
― David Heinemeier Hansson, Rework