a legend in (one's) own mind

a legend in (one's) own mind

A person who affects or believes that they are of greater importance or notoriety than is actually the case. A humorous, ironic twist on the phrase "a legend in one's own lifetime." The assistant manager acts as if she's the only one keeping the company together. She's a regular legend in her own mind.
See also: legend, mind, own
Farlex Dictionary of Idioms.
See also:
  • a legend in (one's) own lunchtime
  • (Don't ask me,) I just work here.
  • (Don't ask me,) I only work here.
  • checks notes
  • GMTA
  • my face when
  • my reaction when
  • no fox given
  • my body is ready
  • off like a prom dress (in May)