Division of Desires

The 613 desires of the soul are divided into 248 positive desires, through which man can acquire a "li chema" intention, and 365 negative desires man cannot use in order to gain a "li chema" intent. The difference between the two desires has nothing to do with intention. In both cases the intention is naturally and exclusively "turned toward the Creator". The difference lies in the power of the desire itself: if the desire is weak it will not awaken intense pleasure. However, this desire enables one to feel the bond with the Creator. The pleasure sensed is called the pleasure to give without restraint. That is to say the desire to please the Creator as it is only possible to please Him by receiving from him. But since this desire cannot be felt with sufficient intensity, it cannot truly give to the Creator. This desire exists only at the level of equivalence of form with the Creator.
All desires born in man are selfish desires. This is the desire to receive for one’s own pleasure. Only the intention "turned toward the Creator" will transform it into an altruistic desire. Hence the difference solely lies in the intent.
That’s what makes Kabbalah so important. It helps us transform our intent. The intention "turned toward the Creator" is called "screen" because it prevents one from "receiving for oneself" and generates the intention "turned towards the Creator".