That is the worst moment, when you feel you have lost / The desires for all that was most desirable, / Before you are contented with what you can desire; / Before you know what is left to be desired; / And you go on wishing that you could desire / What desire has left behind.
The principle which prompts to save is the desire of bettering our conditiona desire which?comes with us from the womb and never leaves us till we go into the grave.
If you have a great many desires, you will gradually eliminate them one by one, until you allow certain desires to dominate and the others to die away.