The higher the expectation, the higher the let down!
There’s a difference between expectations from oneself and expectations you place on others. You control you but when your expectations of others aren’t met, you have little or no control and it’s these expectations that create the most disappointment. So expect big things from yourself, but don’t necessarily always expect big things from others. ~ Arona Offnbrgr
Expectations generate anger and depression and sap your happiness. Believe God and do your duties honestly without seeking any reward or expectation.