This document discusses designing user experiences to persuade through various psychological techniques. It outlines six principles of persuasion according to Dr. Robert Cialdini: reciprocity, scarcity, commitment and consistency, authority, social proof, and liking. The Fogg Behavior Model is introduced as a way to understand how ability, motivation, and triggers interact to drive behaviors. Case studies of persuasive apps and websites are presented and a process for iterative testing and improvement of persuasive design elements is proposed. The goal is to guide users towards adopting desired behaviors by addressing what prevents them through ability, motivation, and well-timed triggers.