But then again, I know plenty of people who are foodies but stay thin. I'm hoping, for the sake of argument, that their svelte physique is as a result of self control instead of full blown bulimia. So how does one "Think thin"?
For me, the best way is to only eat food that's really, really, really good. Which was a foreign concept to me growing up, so I got used to eating food that was indifferently good. And it's still easy for me to fall into the "eat food you don't really want because it's there" mindset, especially when I'm around my parents.
So - Lindt 85% Dark Chocolate is a regular part of my diet, because I love dark chocolate. But I rarely eat more than one 10g square a day, because a little dark chocolate goes a long way. (That one square sometimes takes me 30 minutes to eat, because I savor every nibble.)
But when, on vacation, I was sharing a dessert with my sister, we tossed it halfway through, because it wasn't amazingly good. Wasn't bad, mind you. It just wasn't great. So we had a few bites each (eating the best parts), and then stopped. (Had my mother been there, she would have eaten the rest, hungry or not, so as not to waste the money spent on it.)
If I really really really wanted a Cinnabon, I'd have one. Where by "have one," I mean "purchase one, take a bite or two or three from the ooey-gooey middle (best part for me), and let someone else eat most or all of the rest." Chicken breast doesn't satisfy the desire for cinnamon rolls, so there would be no point in eating chicken if I wanted a cinnamon roll.
I still do eat plenty of indifferently-good food, because I don't spend all day (or all my $) on amazing food. But it's stuff that's healthier in one way or another, and I try to not eat for the sake of eating or politeness. So I don't put any rice in my bowl (and MIL lives with us, and cooks most dinners, so there's always rice in everyone else's bowl), because I'm indifferent to rice and it has virtually no nutritional value. And I try to make that healthy food as delicious as my nutritional parameters, time, and cooking skill allow for. So I put butter on my spinach (it doesn't take much, but it does take some), and tartar sauce (albeit more pickle-y than mayo-y) on my fish, and try to do better the next day if I come up short on fiber.
Oh, and after nearly 8 months, I do have a taste for veggies, and rich desserts taste too rich to me. So that's definitely something you get used to, although in my experience it's easier getting used to the other way around.