So you have to go and read the description of number 2 and find that aspect of holiness that Anthony describes as the third quality.True happiness is uncaused. You are happy for no reason at all. And true happiness cannot be experienced. It is not within the realm of consciousness. So it is with holiness.
Holiness is unself-consciousness. The moment you are aware of your holiness it goes sour and becomes self-righteousness. A good deed is never so good as when you have no consciousness that it is good - you are so much in love with the action that you are quite unselfconscious about your goodness and virtue. Your left hand has no idea that your right hand is doing something good or meritorious. You simply do it because it seems the natural, spontaneous thing to do. If it is real virtue, it would feel so natural that it wouldn't occur to you to think of it as a virtue.
Secondly, Holiness is effortlessness.
Three Qualities Of Holiness — Anthony De Mello