Thanks, Alfred, for your comments. 

When I was growing up, my teachers always used to tell my parents that they were surprised at how mature I was.  Back then, it was a compliment.  I was proud that people thought I was grown up.  As you get older though, maturity is an expectation and not a surprise.  Indeed, people are surprised when you don't act mature. And, as with all expectations, maturity has become a burden.

Last night, I was telling my husband that I felt as if so many people have disappointed me recently.  The mature adult in me knew that these people did not exist to live up to my expectations and that they had their reasons (or rationalizations) for acting as they did.  I was pretty sure these people believed they did nothing wrong.  Yet I still felt disappointed, in some cases even disgusted and angry.  However, I can't express these feelings.  I can confide them to my husband or to close friends, but that's the extent to which I can acknowledge them. 

My teachers defined maturity as the ability to delay gratification.  Well, feeling like I felt yesterday, delayed gratification sucks.