Learn to use your brain power. Critical thinking is the key to creative problem solving in business.
No matter how big you are, details count!
I am prepared to try anything once.
Learn to look after your staff first and the rest will follow
And obviously, from our own personal point of view, the principal challenge is a personal challenge.
Fortunately we're not a public company - we're a private group of companies, and I can do what I want.