Letting Destiny control your life is like giving up your free will. You have no real choice in your life, only a set path forced upon you. Some Destinies put you on a path of good, while others put you on a path of evil. However, Destiny forces you onto those paths sometimes, making you give up many things that define you. Destiny is in truth, a double edged sword. It cuts you just as deeply as it cuts into the paths of others.
Never let Destiny guide you. It may cause more harm to who you are than you think.