We all live on the earth planet, and what is the most important thing on this earth is Prithvi tattva, Prithvi tattva means everyone on this planet wants to be stable & settle. The Prithvi tattva is controlled by the planet Budh, and the planet Budh is assumed as the factor of wisdom. the word "Buddhi" came from Buddh, so the thing is if you want to be financially stable in your life so the most important thing you have to do in your life is to learn.