My Bottom Line: Terry Smith, Tullett Prebon
4 July 2012 Last updated at 10:04 BST
Terry Smith is chief executive of stockbrokers Tullett Prebon.
Terry says that getting sacked 20 years ago meant he explored options he may never have otherwise considered. He says sometimes even a terrible event can present new opportunities and it was losing his old job which set him off on a more entrepeneurial course in business.
Find more business wisdom from other chief executives on the My Bottom Line website.