"It is better to live your own destiny imperfectly than to live an imitation of somebody else's life with perfection." ~ Krishna in the Bhagavad Gita.
Melville said, "It's better to fail in originality than to succeed in imitation."The second was from the Buddha and was found in a book about writing.
The Buddha said, "Your work is to discover your work, and then, with all your heart, to give yourself to it."