"Cleanse first the inside"
O my God, how wonderful is your love for us! You are infinitely worthy of being loved, praised and glorified! We are without either heart or spirit sufficient to this but your wisdom and goodness have given us the means to do so. For you have given us your Son's Spirit and heart to become our own spirit and heart as you promised us through your prophet: “I will give you a new heart and place a new spirit within you” (Ez 36,26). And that we might know what this new heart and new spirit are, you added: “I will put my spirit,” namely my heart, “within you” (v.27). Only the Spirit and heart of a God could be worthy of loving and praising God, able to bless and love him according to his measure. That is why you have given us your heart, the heart of Jesus, your Son, as well as the hearts of his divine mother and all the saints and angels who, together, make a single heart just as the head and members make a single body (Eph 4,16)...
So, my brothers, set aside your own heart, your own spirit, your own will, your own self-esteem. Give yourselves to Jesus so that you can enter into the depths of his heart, containing that of his mother and all the saints, and lose yourselves in that abyss of love, humility and patience. If you love your neighbour and have an act of charity to perform, love him and act towards him as you ought to do from within the heart of Jesus. If it is a case of humbling yourselves, let it be with the humility of that heart. If you should praise, adore and give thanks to God, let it be in union with the adoration, praise and thanksgiving bestowed on us through that great heart... Whatever you do, do all things in the spirit of this heart, renouncing your own and giving yourselves to Jesus so that you may act in the Spirit that animates his heart.
St. John Bosco