Finding the Truth is Easy but changing the reality into something true is far more difficult. As a little bit of a Kotzker, I find myself constantly searching but as soon as I see the reality, I am forced to run. This is because change is hard, it surmounts to a tremendous amount of work.
To a certain degree, in order to change, you must totally admit your failures. Then you have to take yourself out of the routine and depending on how long you have been stuck in this place, going out can be an unbelievable undertaking. So it isn’t enough to have simply found the truth or have admitted the failures, you must make a huge leap and in some cases, it could be equivalent to changing planets.
So in order to make this jump, you have to set in discipline. Mussar study gives a person this. Someone who is used to training themselves can always add a new exercise but for someone who isn’t used to hard core training, they will have to take things gradually. This is why it is important for us to always be in training and working on ourselves. We should always be learning some mussar so that when we need to discipline ourselves, we can.
The Kotzker chassid wasn’t just someone who searched for truth. He also had enough control to change any midah, character trait at any given time. There was no set routine of failures and there was no outside show put on for onlookers.