Mbh 14.12.1a

"'Vasudeva said, "There are two kinds of ailments, physical and mental. They are produced by the mutual action of the body and mind on each other, and they never arise without the interaction of the two. The ailment that is produced in the body, is called the physical ailment, and that which has its seat in the mind, is known as the mental ailment. The cold, the warm (phlegm and bile) as well as the windy humours, O king, are the essential transformations generated in the physical body, and when these humours are evenly distributed, and are present in due proportions, they are said to be symptomatic of good health. The warm humour is acted upon (allayed) by the cold, and the cold by the warm. And Sattwa, Rajas and Tamas are the attributes of the soul, and it is said by the learned that their presence in due proportions indicates health (of the mind). But if any of the three preponderates, some remedy is enjoined (to restore the equilibrium). Happiness is overcome by sorrow, and sorrow by pleasure. Some people while afflicted by sorrow, desire to recall (past) happiness, while others, while in the enjoyment of happiness, desire to recall past sorrow. But thou, O son of Kunti, dost neither desire to recall thy sorrows nor thy happiness; what else dost thou desire to recall barring this delusion of sorrow? Or, perchance, O son of Pritha, it is thy innate nature, by which thou art at present overpowered. Thou dost not desire to recall to thy mind the painful sight of Krishna standing in the hall of assembly with only one piece of cloth to cover her body, and while she was in her menses and in the presence of all the Pandavas. And it is not meet that thou shouldst brood over thy departure from the city, and thy exile with the hide of the antelope for thy robe, and thy wanderings in the great forest, nor shouldst thou recall to thy mind the affliction from Jatasura, the fight with Chitrasena, and thy troubles from the Saindhavas.