ב"ה
More About Life After Death from Chabad.orgLetters of the Rebbe about Life After Death
Whatever the direct cause of the separation of the soul from the body, whether a fatal accident or a fatal illness, it could affect only any of the vital organs of the physical body, but could in no way affect the spiritual soul.
The Yartzeit should not call forth any feeling of sadness, but rather a feeling of earnest reflection, introspection and self-examination. With a view to attuning one’s life on this earth to the life-path of the soul Above, which is constantly on the ascent