What he is saying is that many people just do not know how to be not busy, how to make a space in which to live. Being busy is therefore sometimes simply an excuse to avoid making a life for oneself. It would be hard to move from being controlled to self-determination without some pain and confusion.
說白一點，也就是說很多人根本不知道該如何「不忙」，尋找自己的生活空間，因此，忙碌的生活有時候反而是逃避有自主生活的藉口。