If the desires are material or mundane ambitions and pleasures, you will achieve things in that direction.... But, if the desires are spiritual , sublime thinking produce mental peace and personal happiness, the nature of fruits will be completely different.... If the desires are completely destroyed, one becomes God-like... If desires are mostly overcome with complete devotion /surrender to God, a person becomes saint-like... People running after money, wealth and happiness are real fools devoid of any happiness and peace...they work harder and harder to satisfy their insatiable desires till death and find no place in the Lap of God, All-merciful and kind.... Working with complete focus on one's duties is the way out of all mental and physical problems of all the fast-food eaters and fast-paced human beings of modern age...