Action is what separates the successful business from the one that failed. In his newsletter Perry talked about Fact vs. Fiction in what he calls the guru biz.

What holds most people back is not the Art Factor, but the fact that they simply do not put one foot in front of the other and execute. Via PerryMarshall

See Perry is an adwords guru, his clients success cannot all be attributed to the science of a system but also the art. He rightly points out that for most people it is a lack of action - failure to put one foot in front of the other - is what holds most people back.

That's right, get your but in gear and do something.

Execute, get it into gear.