Expectations and Disappointments

Lately I find I've been having a lot of both. I get these expectations of what things should be like, and when they aren't what I expected, naturally I get disappointed. Is it my own fault for having high expectations? Is it the fault of those not living up to those expections? I guess that's all a matter of perspective.

Perhaps I'm being selfish and when things don't go my way I have a tantrum. On the other hand, it could be I'm being misled, and the misdirection is causing me to have unrealistic expectations, and again, when things don't work out, I get annoyed, disappointed, even pissed off.

I don't like feeling any of these things, and I'm sitting here trying to come up with a solution to this problem. Should I just "suck it up" and live with it? Should I just continue through life without any expectations at all, in doing so, eliminating the chance of feeling let down by something or someone? I think the best thing is to try to merge the two ideals together and prevent myself from becoming completely jaded and apathetic. Yes I'm part of a generation that, sadly, is very jaded and apathetic considering the state of affairs throughout the world today, however I'd rather not be so uncaring that I become a cold hearted bastard and a shut in.