Many author profiles you read are pretty dull and corporate, but not that of Emma Haslett, an excellent and highly readable journalist on Management Today. Here it is... 

“Emma Haslett has been writing about business for five years, including stints at The Times, Property Week and, er, Time Out. Emma’s proudest achievements include being awarded the public speaking prize in year 10 and being told by Boris Johnson that she had asked a ‘jolly good question’. Interviewees subjected to her grillings have described her technique as ‘gentle and tender’.”

The point is that you don’t necessarily have to provide a CV of exploits to boost credibility. Of course you need to say who you are professionally, but injecting humour into a brief bio shows confidence, and as a writer she has every justification for that!