Leaving any role is a daunting task, especially when the company you work for is an industry giant.
But that was the exact situation advertising firm M&C Saatchi's current worldwide chief executive, Moray MacLennan was in over 20 years ago.
In 1995, when the Saatchi brothers left the advertising agency they had founded in 1970, Saatchi & Saatchi, MacLennan had a choice to make - stay as the managing director with the company he had been with since graduating college, or move on with the brothers to start a new agency?
"I walked out, I remember saying to my secretary, 'I'm going out now.' She said, 'how long are you going to be?' and I said I'm going to be a long time. And I walked out and never looked back."
Now MacLennan stands as the worldwide CEO of M&C Saatchi, the company he later formed with the brothers, and now one of the biggest advertising agencies in the world.