While on a silent Ignatian retreat a few weeks ago, I read parts of Encounters with Silence by Fr. Karl Rahner, S.J. In the chapter on vocation, he wrote this about his priestly vocation:
O God of my vocation, let my life be consumed as the Sacred Host, so that my brothers and I may live in You, and You in us, for all eternity" (p. 77).
Some important things come to mind in reading this. First, God is the God of our vocation, whether that be priestly, religious, or lay. Our vocation is a call from Him to become most fully ourselves in Him. Second, we should be consumed by that call. Jesus was consumed by His love for the Father and for us in His crucifixion. There is a suffering, sacrificial aspect to that consumption. However, there is also a redemptive, life-giving aspect to that consumption as well. The consumption of food gives us natural nourishment and life, and the consumption of the Sacred Host gives us supernatural nourishment and life. Finally, whatever vocation we have, that vocation is strengthened by frequent receipt and adoration of the Blessed Sacrament.