Those that faithfully follow these instructions of Mine without envy will become free from the bondage of actions.
Bhagavad Gita - Chapter 3 - Karma Yoga - The Yoga of Action
However, you should know that those persons who, out of envy, do not follow My instructions are deprived of all knowledge. They have lost sight of the goal of life and are bereft of intelligence.
Even a wise man acts according to his nature. All living beings act according to their natures, for what can repression achieve?
The senses are attracted to and repelled by the objects of the senses. But one must not become controlled by such attraction or aversion for they are obstacles.
It is better to perform one’s own prescribed duties imperfectly rather than perform another’s duties perfectly. It is better to die while performing one’s own duties, for executing the duties of others is fraught with uncertainty.
Arjuna asked: O Krishna, descendant of the Vrishnis, what is it that makes a man perform impious activities even against his will, as if by force?
Bhagavan Shri Krishna said: It is lust, which transforms into anger that is manifest from the mode of passion. Know this lust to be totally insatiable and extremely evil. It is the great enemy of this world.
As a fire is covered by smoke, as a mirror is covered by dust, and as the womb covers an embryo, similarly, lust covers the consciousness of the living being.
O Kaunteya, the discrimination of even a wise man can become covered by this eternal nemesis in the form of lust that is like an all-devouring fire.
It is said that the senses, mind and intelligence are the sitting places of this enemy. Covering one’s knowledge, it bewilders the embodied living being.