But in my mind, I never believed that about myself, until very recently.

但直到不久前，我内心从未这样认为。

youdao

But looking back, now that I'm 58, I don't know whether it was conscious or not, but I must have believed in myself enough so that I didn't really let it get to me.

但是我现在已经58岁了，现在回想当年，我不知道自己当时意识到这个问题了没有，但是我一定很相信自己，只有那样我才能够不让那种想法来左右我。

youdao

But I brought on some of the stress, and health issues, myself, because at that time I still believed something no longer true: that knowledge is power.

FORBES: Knowledge Is Power? Those Days are Long Gone