Just how good do you think you are? Much of what we do is measured; it's all about 'performance'... but who sets the standards and who's judging? Everyone else 'out there' - or just you... inside your own head? Slaves to perception or masters of our own success? Time for some answers from David Buckley - the Performance Coach for all in sport, art and business. Maybe you are comfortable not knowing? Well that could be a good start...