One thing that I'm really bad about with my kids is setting boundaries. And I don't mean that in a theoretical, therapy kind of way; I mean it in a literal, physical way. Mainly, setting boundaries with my stuff.
It's such a conundrum. We teach our kids to share, that it's wrong to be selfish, to hoard their crayons or their trucks, to not let others play. But aren't there things that a kid shouldn't have to share? I know there are things I don't want to share. Like my markers. Or my various odds and ends of yarn (yes, I will use them for something, someday). Or my iPod. Especially my iPod, since my two-year-old used my old one as a chew toy and killed it. But how can I hoard my own stuff (or, let's face it, be "selfish" with it), and then make my kids share their stuff? It seems contradictory.
I'd like to think that in life, there are some things that are just mine, and mine alone. There aren't many of these things, and most of them are pretty mundane, but they're vital to my well-being, especially as a parent. When you're a parent, you give so much of yourself -- I've given my body, my time, my job, my house, my car, and the list goes on. To preserve my sanity, I should be able to hoard a few things and keep them, just for myself.