How successful you are = how successfully you helped others.
How successfully you helped others = how much they voluntarily did business with you for their own self serving reasons.
How much they voluntarily do business with you for their own self serving reasons = how much value you provided for the price you charge compared to what other value at what other prices was available in that marketplace at that time.
Does that make it clear?
Wow, that is very easy and clear! Love it!