Our brains are constantly being shaped wittingly or unwittingly -- most of the time unwittingly. Through the intentional shaping of our minds, we can shape our brains in ways that would enable these four fundamental constituents of well-being to be strengthened. In that way, we can take responsibility for our own minds.
Your outlook is a product of your own relationship with expectation. What will or won't happen, no one knows. And how we deal with the stress of not knowing, whether to hope for the best or expect the worst, the idea that our expectations always directly affect an outcome is little more than magical thinking.