What Is the Yetzer Hatov?

The Yetzer Tov is not the counterpart of the Yetzer Hara. The latter is a force; whereas the Yetzer Tov, which is never personified in the Scriptures and the Talmud, is nothing other than the innate understanding which the Creator implanted in Man when "He blew into his nostrils the Breath of Life" - Breshis 2:7, i.e. the Soul, which endows Man with eternal life. 

All men possess this intuition of right and wrong which is called Yetzer Tov. — Awake, My Glory