Of central importance is the notion that theosis, the process of attaining union with God, is greatly facilitated by frequent reception of the eucharistic bread and wine. The following quote comes from The Life in Christ, pp 122-123.
Since it was not possible for us to ascend to Him and participate in that which is His, He came down to us and partook of that which is ours. So perfectly has He coalesced with that which He has taken that He imparts Himself to us by giving us what He has assumed from us. As we partake of His human Body and Blood we receive God Himself into our souls. It is thus God's Body and Blood which we receive, His soul, mind, and will, no less than those of His humanity.
It was necessary that the remedy for my weakness be God and become man, for were He God only He would not be united to us, for how could He become our feast? On the other hand, if Christ were no more than what we are, his feast would have been ineffectual. Now, however, since He is both at once, He is united to those who have the same nature as Himself and coalesces with us men. By His divinity He is able to exalt and transcend our human nature and to transform it into Himself. For when the greater powers are brought to bear upon the lesser they do not permit them to retain their own characteristics: when iron comes together with fire it retains nothing of the property of iron, when earth and water are thrown on fire they exchange their properties with those of fire. If, then, of those which have similar powers the stronger thus affect the weaker, what must we think of His wonderfully great power?
It is clear, then, that Christ infuses Himself into us and mingles Himself with us. He changes and transforms us into Himself, as a small drop of water is changed by being poured into an immense sea of ointment. This ointment can do such great things to those who fall into it, that it not only makes us to be sweet-smelling and redolent thereof, but our whole state becomes the sweet-smelling savour of the perfume which was poured out for us, as it says, "for we are the sweet savour of Christ" (2 Cor 2:15).