Barnum identifies the core mechanism of wealth creation as concentrated, sustained effort applied to a single pursuit. Perseverance separates those who reach the goal from those who quit just short of it. Doing business with full might is what distinguishes the prosperous from the merely competent. The enemy of this concentration is distraction: jumping between ventures scatters energy, while undivided attention generates the compounding improvements that create Wealth. Attributing outcomes to luck is the final evasionlike causes produce like effects, and proper methods cannot be permanently thwarted by Luck.