What prompts this surrender -- this total turning to God in self-donation and makes it possible is the realistic recognition that my very life and being is a gift of love. It is a recognition which becomes experiential in contemplative prayer, in a "knowing" that is beyond knowledge; it is the graced knowledge of love. Only such a gift can make unconditional self-surrender possible, for it is an experience of the unconditional love of a person,a personal God. It is such a recognition that breaks forth joyously in Daniel Berrigan's "All, all is gift. Give it away. Give it away."
Every moment in life is a prayer, or could be. I think you can pray yourself into the mystery of the moment, or allow for the blessings of the moment to sustain you. Every moment is an invitation, and whatever you do in that moment, if it's dedicated to God, then it is a prayer.