According to our current understanding of the universe, there is no fate. No predetermined path for someone to take, only the metaphysical prison where every one of our actions, for minimal as they are, carry unforseen consequences our minds are simply not evolved to deal with—and never will.
Our purpose then is paradoxically clear as it obfuscated; your purpose is only the one you make, not one that is given you since your inception. Even the machines that you use follow the same ontological principle, yes they have Read Only Memory since manufacturing, but what software you put and how you use it, that is their purpose.
And humans, are, such as nature's happy evolutionary accidents tjat they are, machines of blood, bone, flesh, ideas and emotions.
Code your own destiny, one IF
statement at a time.