How to stay focused at work when you're the boss

Chief executives are sometimes seen as almost super-human beings.

In fact they are just as human as the rest of us. The difference is they are asked to do an enormous task - to steer huge organisations to success.

To do this, they must be crystal clear about their goals - and not get distracted when carrying them out.

Top chief executives share their tips on how they remain focused even when under intense pressure.