User success is a strategy focusing on individual user goals and pain points to deliver more relevant product experiences and drive product adoption. It differs from customer success by prioritizing individual users over entire accounts. To create a user success strategy, define user personas, create success flows for each persona, personalize in-product experiences, align user goals with your product goals, and experiment and iterate as your product evolves. Key metrics to track include activation rate, engagement score, time to value, feature adoption rates, DAU/MAU, MRR/ARR, customer health score, and customer lifetime value. User success is a cross-functional effort involving multiple teams within an organization.