This is what Neale Donald Walsch was informed in his books, Conversations with God, as 'The Divine Dichotomy.' We have freedom of choice: yet our Destiny is ordained. To our minds the two concepts seem incompatible.
The sensible thing to do, I believe, is to imagine, think, act and believe that you DO have freedom to choose your own destiny. We are responsible for our lives - and how we interpret our lives. Don't put it onto God, or Fate, or good or bad fortune. To do that is to surrender your power to make your life decisions.