你必须努力工作才能实现梦想。

To write is to embark on a journey of self-discovery, where each word is a step closer to understanding the essence of our existence.

So given a Time Turner, I would tell my 21-year-old self that personal happiness lies in knowing that life is not a check-list of acquisition or achievement. Your qualifications, your CV, are not your life, though you will meet many people of my age and older who confuse the two. Life is difficult, and complicated, and beyond anyone’s total control, and the humility to know that will enable you to survive its vicissitudes.

现实是，你知道，作为一个黑人，巴拉克去趟加油站都可能被开枪打死。