We are still in the position of waking up and having a choice. Do I make the world better today somehow, or do I not bother?
Even the simplest choice can make a jaw-dropping difference in our world.
Without question, we make choices - and those choices have consequences. So can you control your own destiny? To a degree, certainly. Must you have faith in serendipity? Without question, you'd better. Otherwise you're foolish.
We're part of a greater humanity and we can actually affect the world by the choices we make once we leave the theater.