That's not true, there are most probably lots of other people who are worse off than us. I guess one thing you can do is look around you carefully, you'll notice how some people actually do look worse off than you, and could very well be. At least that's how I help myself when I feel that way
And as for people you know or used to know, like ex-classmates, I think you'll be surprised how things are not turning out as well for them as you think they might. I was browsing though one one of those social network things like Myspace, and I think you'll be surprised to find out that those you think would most likely be doing the best are not doing that well now. Try looking at the pages, it can be a boost to your confidence. And oh, those that you think weren't going to do that well could very well indeed be the ones who are actually doing well now. That's a confidence booster too. It proves the underdog can come up tops too! :lol: