We all know that Kabbalah teaches a dual reality must be held in our hearts, on one hand we must be happy, but too much happiness causes lack of realistic expectations, hence anger etc. thus one must balance happiness with a touch of sadness, perhaps in line with this, another mechanism may be proposed – We may be thrilled over the blessings God gives us, but simultaneously, we must be concerned, if we are not one hundred percent submitted to God’s teachings, we may fall off the cliff into ego, hence evil