A true chore to get through, this book's genuinely inspirational message is unfortunately diluted by self-indulgence, the whole thing feeling badly in need an editor to shave off about 150 pages' worth of stories in which the author does little more than simply be a little girl. There are moments of inspiration, and the author's overall trajectory is certainly compelling and inspiring, but much of this book's potential power is lost in its amateurish retelling, its structure hamstrung by stories that clearly did not warrant inclusion, its page count running far beyond the material's ability to remain compelling. As such, this book starts to feel like a slog at around the halfway point.
It doesn't help that the author all but refuses to make herself anything less than infallible. She is unquestionably a victim here (in a way that begins to feel an overkill, prompting the reader to wonder just how truly cartoonish this parade of monstrously abusive Orange County adults could have actually been), but also insists upon maintaining her own moral superiority throughout the book, at just about all costs. True mistakes (the kind from which one might learn valuable and painful lessons) are almost never made, and the author seems clearly uninterested in portraying herself as anything other than a constant victim, and one with interest in little beyond simply Doing the Right Thing, to boot. The unwillingness to admit to even the most basic of adolescent misbehavior only serves to make this book feel that much more self-indulgent, and this isn't helped by the fact that the author takes care to mention her abstinence from anything that might be construed as even remotely "immoral," such as sex or marijuana, expecting readers to believe that she'd have the temerity to do something like steal a ton of pot from her step mother, but then also possess the upstanding morality to refuse to smoke literally any of it.
This certainly isn't to say that The Size of Everything would have benefitted from an author who seemed to "deserve" her abuse in some way (nobody ever, EVER deserves what Erin went through in this book), but a more honest portrayal of a well-rounded, real kid — one willing to make mistakes and get into trouble as literally every kid does — would have made this story that much more compelling. The author's willingness to be more open with the portrayal of her younger self would have perhaps presented readers with a more compelling and complex anchor point, without diminishing the horrors of the abuse visited on her by the adults in her life.
Instead, the author critically fails to examine herself in any meaningful way: It's a foregone conclusion, throughout the entire book, that Erin Cole is a Good Person with Proper Motivations. Instead, she examines the parade of terrible behavior around her, simply marveling at how she remained so improbably fantastic despite it all. As such, The Size of Everything often feels more self-congratulatory than it does inspirational.