When we throw a ball against the wall, we know for certain that the ball will bounce back. When we “throw a ball” of caring for someone else or of being there for someone when we don't want to be, we need to understand that this ball, too, will bounce back.
Our blessing is the ability to know with absolute certainty that anything positive we inject into someone else's life will bring positivity back to us, while anything negative we inject into someone else's life will cause negativity in our own.