Answer: If you are in a group, you need to be concerned about the progress of your friends.
Answer: First of all, you must ask yourself whether a friend has everything necessary for normal existence. If not, then try to help him. All the rest of the time, you must think about what else you must do for him to attain the Creator. This is because his spiritual advancement is the best means for your spiritual advancement.
Together, you are a spiritual cell. If you think about him, a cell like this will certainly ascend and advance. But if you think about yourself, you will descend.
Therefore, it is said that the physicality of a friend is my spirituality.
From the Kabbalah Lesson in Russian 12/11/16