An amazing thing about self-giving love is that because of God, it's indestructible.
Our God is so great that even as he hung on a cross, being destroyed and shamed, in so doing he destroyed the power of that destruction and nullified it. He poured out his self-giving love with the ultimate result that He himself was made whole. Our God is so great that His martyrdom is not self-destructive of His Self, nor is His Self-giving able to lessen Him.
As an awesome flow-on, the redeeming power of the Christ-event is so great that the self-giving of those who are in Christ is similarly not destructive to self, but in Him is indestructible.