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.

自己不愿意的，不要强加给别人。

最好的投资机会往往来自被大多数人误解或忽视的行业。

If you feel lonely, it's because you're not alone with yourself enough.