It is what separates great entrepreneurs from average ones.

People often do not do something even though they believe it is the right thing to do, simply because they believe change is impossible.

The wonderful thing which great entrepreneurs know in their bones is that you only need to convince a few people that change is possible. Those few people will convince others who will… anybody with a basic sense of math will see how this translates to mass acceptance and market share.

The greatest entrepreneur ever - Steve Jobs - had total mastery of this.