What do I have that is truly "mine"...

Well, according to this typically fantastic commentary by Fr. Cantalamessa, all we have that truly belongs to us is sin and misery...

Communion means exchange, sharing. Now, this is the fundamental rule of sharing: that which is mine is yours and what is yours is mine. Let’s try to apply this rule to Eucharistic communion. In doing so we will see its greatness.

What do I have that is truly “mine”? Misery, sin: This alone belongs to me exclusively. What does Jesus have that is “his” if not holiness, the perfection of all the virtues? So, communion consists in the fact that I give Jesus my sin and my poverty, and he gives me holiness. In this the “admirabile commercium,” or “wonderful exchange,” as the liturgy defines it, is realized.

The entire piece is about unity, but I couldn't help being struck by the line about what is truly ours, as I often forget that I should be thankful for my every breath as they are each a gift, and that all that is truly my own is my sin.