Ten years ago, persuasive design was a relatively new frontier in the field of UX. In a 2015 Smashing article, I was among those who showed a way for practitioners to move from being primarily focused on improving usability and removing friction to also guide users toward a desired outcome. The premise was simple: by leveraging **psychology**, we could influence user behavior and drive outcomes like higher sign-ups, faster and richer onboarding, and stronger retention and engagement. A decade later, that promise has proven true — but not in the same way many of us expected. Most product teams still face familiar problems: high bounce rates, weak activation, and users dropping off before experiencing core value. Usability improvements help, but they don’t always address the behavioral gap that sits underneath these patterns. Persuasive design didn’t disappear — it matured.…