Expectations will always color your experience.  Why is this? 
For your thoughts truly do create your reality.  When you have expectations, they set up a
vibration much like an intention.  If
your expectation of how an event will turn out does not match the
circumstances, you are disappointed.  If
you can learn to set the intention at all times that the greatest good be
served and have no expectations at all other than the same as your intention, then
you will never be disappointed.  In fact,
you will be quite delighted at the outcome.