1%: that's all it takes. Say your helpfulness was upped by 1%? Or your creativity? Or your ability to pitch or close the deal? Or if you had 1% more energy? And how easy is it to increase by 1%? Certainly initially, not so hard. And if you multiplied a few of those '1%s' together what would happen? Well, you'd be brilliant.
1%: that's all it takes.