So, getting to be rich and famous is more related to achieving greatness in your own field and not necessarily gaining money and becoming the richest person in the world.

greatness 是由形容词 great（伟大的）加上名词后缀 -ness 构成的名词，表示"伟大、卓越"的状态或品质。greatness 在这里指在某个领域达到杰出成就或非凡高度的状态。