The paper considers the status of autobiographical interview data in life history and biographical research. Interviews tend to be treated, it is suggested, as ‘sacred’ texts‐‐as contemplative and authoritative versions that are as free as possible from the biasses and desires that ordinarily animate (and ‘contaminate') personal stories and anecdotes. It is argued here that, on the contrary, interview accounts are as mundane and pragmatic as any other kind of self‐talk. People use identity for practical ends‐‐to make sense of their conduct, to establish allegiances, to justify moral positions and defend educational ideals. The paper ends by examining a fragment from an interview. Using concepts from discourse and conversation analysis it shows how a teacher, Karen, constructs a particular professional identity and thus engages in an act of mundane autobiography.