It's meaning to me: god came to mary for her to carry his son, jesus, to carry out his master plan and she asked for his holiness to surround her on her journey.
Although we are not physically carrying jesus as mary did, we can carry him spiritually and allow his master plan to be fulfilled in our lives. Give your all unto him! There will be times during our life's journey that we feel lonely, confused, unworthy, sad, etc. But even in the darkest nights or sunniest days, our heavenly father is there for our own personal "breath of heaven" moments.