I have a co-worker whose motto is, "It could always be worse." Whenever anyone complains about anything, she's right there, in all her incredibly irritating glory, to tell you that's it's not so bad. I've discovered a great way of dealing with her. Take this exchange from this morning:
Me: "Brr! It's so cold!"
Co-worker: "Well, it could be worse. Imagine if you didn't have a coat."
Co-worker: "Ow! You just slapped me!"
Me: "Well, it could be worse. Imagine if I'd stabbed you!"
Seriously, I should be charging you people for this stuff. I'm like a professional-relationship genius.