Effectiveness is doing the things that get you closer to your goals. Efficiency is performing a given task (whether important or not) in the most economical manner possible. Being efficient without regard to effectiveness is the default mode of the universe.
Tim FerrissPeople really do think they have to choose between high stress and high reward jobs, and low stress and low reward jobs.
Tim FerrissSlow down and remember this: Most things make no difference. Being busy is a form of mental laziness-lazy thinking and indiscriminate action.
Tim FerrissThe commonsense rules of the "real world" are a fragile collection of socially reinforced illusions.
Tim Ferriss