Extravagant means to diverge greatly. Typically we have been taught that to be extravagant is not a good thing, because it is not economical.
But perhaps in order to live a more interesting and beautiful life, we must strive to live a more extravagant life, and to become more extravagant in our spirit and in our soul. Also more extravagant in our aesthetics, outward appearances, and inner thoughts.