I have been disappointed and I am sure I have disappointed people. We all need to give ourselves a break. Being human is a hard thing to be but its all we are. Getting our hopes up can be dangerous due to the fragile nature of our feelings and emotions. For me being a people pleaser makes the disappointment thing that much harder to cope with. All I can say is that disappointment is a hard habit to break.
(Thanks to Rosie Culture for inspiring this post)