Scripture uses the notion of self-gift as the definition of the love that Jesus had for us!

It's not my invention.

It's what love is.  The image of Jesus on the Cross is the very model of the love we must have for God, and for others.

The "do this in memory of me" phrase has a much higher meaning.  It wasn't just His reminder to us to "remember to do the meal"...but to love as He loved us to the end. 

Kenosis.  (emptying of the self, or emptying of the tomb). 

If we strive to empty ourselves out every day - out of love of God - a funny thing happens...either we fall asleep at the end of the day early very happily exhausted, or God gives us graces to continue loving!