Why does the heart chooses

My biggest enemy bits in my chest Through the battle of the heart,mind and the conscience The heart always win Through the war of what right and wrong The heart always do what it think it right It chooses what I eat It chooses what I do It chooses whom I love When it get hurt by its own choices I get miserable more it is. I suffer because of it own mistakes of choices Why do I have to always follow it It rules my life When it stop beating I stop living. I do not understand as I think Why I should Follow my heart in everything I do.