Dogs have such short life spans, it's like a concentrated version of a human life. When they get older, they become much more like our mothers. They wait for us, watch out for us, are completely fascinated by everything we do.

So it persists, for many of us, hunger channeled into some internal circuitry of longing, routed this way and that, emerging in a thousand different forms. The diet form, the romance form, the addiction form, the overriding hunger for this purchase or that job, this relationship or that one. Hunger may be insatiable by nature, it may be fathomless, but our will to fill it, our often blind tenacity in the face of it, can be extraordinary.

American companies spend more than $200 billion each year hacking women's bodies into bits and pieces, urging comparisons between self and other, linking value to air-brushed ideals, and as the girls in my seventh-grade class graduated to high school and beyond, the imagery around us would only grow more specific, more pummeling, more insidious.

I'm still prone to periods of isolation, still more fearful of the world out there and more averse to pleasure and risk than I'd like to be; I still direct more energy toward controlling and minimizing appetites than toward indulging them.

The hard things in life, the things you really learn from, happen with a clear mind.

Desires collide; the wish to eat bumping up against the wish to be thin, the desire to indulge conflicting with the injunction to restrain. Small wonder food makes a woman nervous.

Dogs possess a quality that's rare among humans -- the ability to make you feel valued just by being you -- and it was something of a miracle to me to be on the receiving end of all that acceptance. The dog didn't care what I looked like, or what I did for a living, or what a train wreck of a life I'd led before I got her, or what we did from day to day. She just wanted to be with me, and that awareness gave me a singular sensation of delight.