The Musar movement of Rav Israel Salanter was meant largely to help people improve their character traits. But it has a side advantage to help people become aware that good character is an essential part of Torah. In fact this was a surprise for me. My first year in Shar Yashuv [a Lithuanian type of yeshiva based on the Gra], I spent some time learning the Sefer HaChinuch. There I discovered that many commandments of the Torah have to do with good character.