What you do affects the whole, and vice versa. A Kabbalah story from Rabbi Shimon Bar Yochai perfectly brings home the point. One of several people in a boat suddenly began to drill a hole in the bottom. His friend asked, “Why are you drilling?” the person drilling replied, “What business is it of yours? I am drilling under me, not under you.”

Because all humankind is connected into one system, the irresponsible egoists subject themselves and all the others to suffering. It is the transformation activated by Kabbalah that makes us see the irresponsible egoists in ourselves and transform them into responsible adults, altruists in Kabbalistic terms. more…

p. 260, chapter “Cure Me,” part “Kabbalah in Today’s World,” in The Complete Idiot’s Guide to Kabbalah by Rav Michael Laitman, PhD with Collin Canright.