I think all kids go through a phase during which they think their lives are so difficult. I certainly did. But whenever I was about to complain about it (and I am being totally serious) I'd think about how much worse it could've been. There's always someone worse off. Knowing that makes me a little more grateful for the mundane struggles I face every day.
Here we have five fictional characters who have had it pretty bad when they were kids. This time I'm counting down, because it gives more impact that way. :P