Expectations, when fulfilled give happiness but if not fulfilled then give double the sadness and grief as first you experience stress, which depletes your morale which in turn deteriorates your mental and physical health. The most common misconceptions are between expectations and hope.
Hoping is just a wish, a flexible one but when it comes to expectations, it’s not very flexible and thus, not very wise. You may expect from colleagues, friends and your loved ones but when it comes to fulfilling these, at times, none of them would be able to do as per your desire.
Always hope and not expect, because at some point expectations always hurt you, and hope surprises
While expectations have no end hurting you, hope has no end to reversing your damage caused by the former. If expectations are the seeds of desire, then hope is that ray of sunshine without which the plant wouldn’t grow
This is because Expectations work both ways. For instance, when you aren’t able to fulfill someone’s wishes to their level even after doing your best, you always give explanation but when someone else couldn’t fulfill your expectations and gives explanations, you feel they’re just giving excuses.

Disclaimer: the expectations we are talking about here, mean the personal ones and this has nothing to do with your work or official expectations.