Nir Eyal is an Israeli-born American author, lecturer and investor who writes nonfiction self-help. He wrote Hooked: How to Build Habit-Forming Products (2014), a book on designing products people return to, and Indistractable: How to Control Your Attention and Choose Your Life (2019), which turns to focus and distraction. His more recent book, Beyond Belief (2026), debuted on the New York Times bestseller list upon publication.