Bhagavad Gita, Shri Krishna has suggested different paths treading which one can keep the likes and dislikes and also the consequent desires under control ; and thereby save oneself from many evils.
For this purpose, an analysis has been made in shlokas 3.40 to 3.43 as to where does the lust reside and how can it be curbed. It has been stated that the lust resides in senses, mind and the intellect. Through them, it clouds the wisdom and deludes the embodied soul. Therefore, this sinful lust, which is the destroyer of gyan (spiritual wisdom) and also the vigyan (worldly knowledge), must be curbed by controlling the senses, from the very beginning. It has further been stated that the senses are great, but mind is greater than the senses ; and the intellect (buddhi) is greater than the mind. And that which is greater than even the intellect, it is the self. Thus knowing the self to be beyond intellect ; and steadying the mind through intelligence, one should kill this enemy in the form of lust, which is so hard to get at.
Shri Krishna has thus explained the hierarchy of awareness, in the above shlokas. The Self (Atman) being the awareness itself is the highest. Thus controlling the mind through intelligence, one should destroy the lust which remains present in the senses, mind and the intellect.
In other words, instead of working in a mechanical fashion, one should constantly remain aware about himself, his ego and ious.