In the book of one of the disciples of Reb Israel Salanter, Isaac Blazer, is brought the idea that there are two levels of fear of God. Fear of punishment and awe. And he brings that the lower fear is to bring to the higher fear which then leads to attachment with God.
In the prophets of old, it is clear that this attachment sometimes brought with it some kind of new revelation as with Moses who came to the highest level of attachment with God at Mount Sinai -but he did not stay there, but then brought the Torah to Israel.
The Musar movement [of Reb Israel Salanter] itself in itself is a great idea. To get people to learn and try to keep the basic books of Ethics from the Middle Ages that encapsulated the basic lessons of how to live according to the Law of Moses.
The trouble is that it got mixed up with institutions. Real faith is personal. Torah was not meant to be a business.
One of the reasons for the divide of faith and state in the USA Constitution was the abuses of clergy in England of the Anglican Establishment. This same dynamic you can see today when people use Torah for money.
In any case, Musar itself is divided, into Musar of the disciples of Reb Israel, Musar based on esoteric literature [post Middle Ages], Musar of the Middle Ages.
[In any case, the basic emphasis is on good traits and fear of God and pointing out that both are essential aspects of Torah.]
There is a difference of opinion about secular learning. All later Musar condemn it. Musar of the Middle Ages recommends parts of it--not all. The Rambam/Maimonides recommends Physics and Metaphysics as leading to fear and love of God.] [This same opinion you can see in the Obligations of the Heart and other Musar books of the Middle Ages that also go along with this idea. But even back then there were plenty of opposite opinions (like the Ramban/Nahmanides). But even the Nahmanides was a doctor. It seems he was against Aristotle but not learning a secular discipline for the sake of making an honest living.]
Learning Musar did in fact help orient me towards the importance of good traits and also to come to Israel. In fact, the whole mind set [paradigm-and world view] has stayed with me even after times when I have not been learning Musar.