Bhagavad Gita 3.35

3.35 Better is one's own duty, though devoid of merit than the duty of another well discharged. Better is death in one's own duty; the duty of another is fraught with fear (is productive of danger).

It is far better to discharge one’s prescribed duties, even though faultily, than another’s duties perfectly. Destruction in the course of performing one’s own duty is better than engaging in another’s duties, for to follow another’s path is dangerous.