People get very set in their ways - particularly if they've been doing the same thing for some time - but the worst mindset of all comes from those who won't do what I suggest because they don't believe they can.
As I'm always telling my clients - if you think you can't then you probably won't.
It's such a simple thing and, for the majority of my clients it sinks in pretty quickly. They understand that if their business is going to survive they have to start thinking their business can survive and doing the things that will achieve that.
Which brings me to Nick Clegg.
He claimed at the weekend that this country - without the EU - would become a "pygmy nation". I've no doubt that he believes that because Nick Clegg has a "pygmy mindset". He's not stupid - I'm sure he has a very high IQ - he just lacks the ability to think beyond his self-imposed boundaries.
He honestly believes this country can not achieve great things. He sincerely believes that we are incapable of forging our own place in this world as an independent nation. He believes this because he has a small minded attitude.
You don't need to be a great person to achieve great things - you just need the ability to have a great vision and the will and determination to see it through. Nick Clegg has none of these assets.
Indeed, anyone who believes - like Nick Clegg - that Britain is unable to make its way in the world as an independent nation also has a pygmy mind. They are the true "little Englander" - because they have little minds with little imagination.
They are the people who are always making excuses and finding reasons NOT to do something. I come across them all the time in my work.
Britain can survive in the big bad world as an independent nation. Not just survive - but thrive and achieve greatness once again. I'm not saying it is easy - it will take work, effort and time - but I have no doubt it can be achieved.
I am equally certain that as long as we have people governing this country who THINK we can not do this then we never will.
If the government thinks we can't - we probably won't.
What can we do?
We need to get rid of the Nick Clegg "pygmy" attitude.
Change the mindset - change the government.