You are born again in every moment.  Each time you breathe you are given the opportunity to experience the Christ within—the perfect communion with the Creator as a child of God.  The one known as Jesus did know this and teach this.  So profound and radical was the teaching that still wars are fought over these words.
 
You need not die physically nor change radically to be born again.  You need only admit what you know in your heart—that there is no separation between you and the kingdom of heaven.  It lies there in the mind and in the heart.  Each moment that you forget this you die, and each moment that you remember this you are born again. 
 
So many more birthdays you can celebrate.  Make them birth-moments as you walk about day in the full realization of your unity with all creation.  Do this, my friend, and celebrate every moment of your life.