As we human beings have feelings and desires so we predict that our wishes should be fulfulfilled.But if not, our hearts break. l think we should not expect anything in our lives because life is unpredictable.
If we have a superpower of the right prediction about the future we are surely not human beings.
I disagree, with your not expecting anything comment.
I always expect that I work hard to be the best version of myself, that I approach life with passion and design and create it as best I can. Those expectations, and the resulting actions help me live a better life. To have no expectations is to be aimless. Just my opinion.