Memory is famously faulty. Just as politicians and journalists attempt to create stories and "narratives" out of data points, all humans do the same. Often, our conscious memory stories are designed to support our positive self-regard, to rationalize, blame, find excuses, and so forth. Temperamentally melancholy people tend to do the opposite and are often more honest with themselves.
Psychiatrists and Psychoanalysts know how to listen stories and information as "memory data" with all of the selection, distortion, factual accounts, mental constructions, etc. which are part of memory. We are trained to listen as if watching a movie. Since we are not judges or juries, "truth" is not necessarily our pursuit although we can be quick to call "bullshit" when needed because people lie and manipulate too. We are not truth-relativists, but our focus is elsewhere.
One of the fascinating things about Psychoanalysis is to see how memory narratives change during the process.
Even recent memories are subject to distortion: Trust your memory? Maybe you shouldn't.