把这一句，留给此刻的你

You can look for external sources of motivation and that can catalyze a change, but it won't sustain one. It has to be from an internal desire.

你可以寻找外部的动力来源，它可以催化一个改变，但它不会维持一个。它必须来自内心的渴望。

— Jillian Michaels 吉利安·迈克尔斯