<p>When it comes to making great decisions, the way you think about things is usually a lot more influential than what you actually think.<br>If you ever hired a person who 'looks the part', dated someone who 'gives you a good feeling', voted for the party that 'speaks the most sense' or got into an investment that 'cannot be missed', only to realise you made a horrible mistake, you might have wondered how you ever talked yourself into it.<br>Yet...