LaunchDarkly's survey on psychological safety reveals that developers desire to improve their processes without causing problems. Release assurance, which involves knowing what version of software a user has received and its impact, is crucial for understanding necessary changes. To build release assurance into the software development life cycle, developers should know what they are shipping, collect objective and subjective data about users' experiences, and take action on the information gathered. This approach helps improve product fit and analysis by providing valuable insights into user behavior and preferences.