원씽(The One Thing)_240331

#원씽,#게리켈러,#제이파파산,#구세희,#비즈니스북스,#복잡한세상을이기는단순함의힘,#당신을소모시키는멀티태스킹의허상에서벗어나라,#그러니내일출근도화이팅