To die one day is my destiny. To do good or bad while I am alive is my free choice. Mussolini
and Hitler died early for doing bad. Their choice of behavior determined their destiny.
If everything is preordained then why put someone in jail for stealing? And if everything is free
choice, then why can't that incarcerated person simply walk out of jail any time he or she wants?
Looking at it from a spiritual perspective, it is clear that every major religion of the world (Judaism,
Christianity, Islam) accepts the co-existence of destiny and free choice. All theologies believe that human
beings are destined for greatness. That is why they extol virtue and abhor immorality. All theologies also
believe in free choice, else the concepts of reward and punishment, comeuppance and recompense, heaven,
hell, all become meaningless.
Some people use destiny as an excuse for bad behavior. Whenever conscience bothers any one who has done
something wrong, destiny is the cushion he or she falls on. "What could I do? It was preordained that I
steal this diamond brooch."

Get the idea?
Therefore your destiny is determined by your behavior, the behavior of other toward you based on your behavior towards
them, the finanical situation you were born into(rich parents etc. etc.), hard work, and lots of luck.
But then again who believes in luck!