He, who is the master of riches but not of his senses, certainly loseth his riches in consequence of his want of mastery over his senses. One should seek to know one’s self by means of one’s own self, controlling one’s mind, intellect, and senses, for one’s self is one’s friend as, indeed, it is one’s own foe. That man, who hath conquered self by means of self, hath his self for a friend, for one’s self is ever one’s friend or foe.

In plain words: A rich person who cannot control his desires will lose his riches. Try to understand yourself by controlling your mind and senses, because your own self can be your best friend or your worst enemy.