So Good They Can't Ignore You by Cal Newport
Passion is overly romanticized. The book opens with Steve Jobs's commencement speech, pointing out that what Jobs actually did was quite different from what he preached. I believe passion shouldn't be something you're expected to force out of thin air; rather, it develops naturally through the process of doing something. You might have a passion for XYZ, but the world usually doesn't care about your passion—it cares about your output.