What is the true significance of Birthdays?

"It is truly a special day in one's life. It is one of those days in the year when the Supreme descends into us - or when we are face to face with the Eternal - one of those days when our soul comes in contact with the Eternal and, if we remain a little conscious, we can feel His Presence within us. If we make a little effort on this day, we accomplish the work of many lives as in a lightning