In the "Standards for the 21st-Century Learner," the American Association of School Librarians (AASL) describes the skills, dispositions, responsibilities, and self-assessment strategies that are necessary for a 21st-century learner. However, as wonderful as AASL's 21st-century goals sound, they will fall on deaf ears because students who have a fixed mindset are more interested in whether they look smart or dumb than they are in acquiring the knowledge they need to succeed in the future. What can educators and librarians do about this? The author's research shows that students with a "growth mindset"--those who believe that their intelligence can be developed--are eager learners and seek to cultivate the very things the AASL so passionately recommends. What's more, librarians can help them develop a growth mindset. In this article, the author discusses how to cultivate and foster a growth mindset in students.