I once did a university short course as an adult and we had to do an assignment at home, bring it in the next week and speak for ten minutes about it in 'An amusing and erudite way' We were all very nervous standing in front of the class, my turn came, I felt sick, but I did my 'Speech' and I could see the pig of a lecturer pulling faces like a Bulldog chewing a wasp.At the end of each speech the lecturer gave feedback good and bad ABOUT the subject and how it was presented. With mine he said 'Excellent exploration of subject matter and subsequent analysis, but shame about that TERRIBLE voice, it's not good AT ALL'... OMG that gave me SUCH a complex, asking people if my voice was ok, too loud, too quiet, too screechy ? No one had ever mentioned it before ..or since for that matter and I think he just probably didn't like me or my Yorkshire accent,but it really knocked my confidence for ages after.