St. Thérèse quoted in Carmelite Spirituality in the Teresian Tradition Paul-Marie of the Cross O.C.D.
Merit does not consist in doing or in giving much, but rather in receiving, in loving much. . . . It is said, it is much sweeter to give than to receive, and it is true. But when Jesus wills to take for Himself the sweetness of giving, it would not be gracious to refuse. Let us allow Him to take and give all He wills.
Our merits increase as we empty ourselves and allow God to fill us. Utter self-giving means utter Divine receiving, and whatever merits we might have accrued dim in comparison to being spouse to God. Once again, St. Thérèse is so right on the mark. And one of the great difficulties of our time is that so many know well how to give, but receive very, very poorly.