ספר שיחות מוהר"ן אות - רצו

He spoke with us several times that his strong will was that we should walk with the Toroth he revealed. That is: to go first with a certain Torah for approximately two or three months — meaning that all one's service and conduct in the fear of Hashem should be according to what is said in that Torah. And then to take another Torah and walk with it for two or three months in a similar manner. And through this a person can come to very great levels. And he said that through walking according to his Toroth one can merit to very great levels. And this was very dear to him — that people should go with his Toroth and fulfill them in practice.