when people become religious usually their character deteriorates exponentially.
So this approach of Reb Israel Salanter of combining learning Torah along with Musar makes a lot of sense to me. but besides that I founds lots of very important ideas about practical living in books of Musar.[The idea of learning fast in the אורחות צדיקים is one idea I used in Torah and also in Physics.]
[Trust in God with no effort I also discovered in books of Musar and that certainly has been a help to when ever i have listened to it.]
It would be hard to put it all into words but some important idea I gained from my parents and teachers in high school. Other very important ideas from my teachers in yeshiva and still more from reading Musar and Dante, Plato and the Rambam.
It might be a good thing to try and consolidate it all. But the main thing I discovered was not what good ideas to adopt but rather the importance of learning common sense about what kinds of people to avoid and what kinds of groups and ideas to avoid.
This is in fact one of the drawbacks of the religious world which has in it too many groups that are simply Sitra Achra [Dark Side] cults trying to get themselves accepted as valid.