https://www.sefaria.org/Shivchei_HaRan,_An_Account_of_His_Pilgrimage_to_the_Holy_Land.33
Shivchei HaRan, An Account of His Pilgrimage to the Holy Land 33 | Sefaria Library
No matter how high he stood, the Rebbe was never satisfied with his accomplishments. He had practiced honestly and earnestly every type of devotion mentioned...