Like midwife, I ate out a lot when I was gaining weight, as in, sometimes twice a day.
I did go out to restaurants while losing, and I still eat out--just not nearly as often. For me that means once or twice a week. I learned really quickly about portion sizes and choices, and that obviously I could not eat all of what I was served. Sometimes I could only eat 1/3 of what was served!
Often I don't want to take home what I haven't eaten, and so I got over the reluctance to leave food. Better in the garbage than on my body.
Places like Macaroni Grill, Carrabbas, Olive Garden, Red Lobster, TGIFridays... I visit these very rarely. When I do, I order the best things I can find. I leave a lot of food--like pasta--and take home most of what I order. And sometimes I throw a lot of that away later.
One of the places I like best is Sweet Tomatoes, but even there, it's easy to overdo the calories without realizing it. I have had to be very careful there. And I see a lot of obese people there, probably thinking they are just having a "healthy salad."
I like breakfast out, but I try not to do that much because it's too easy to go over on carbs.
My weight loss stalls have more to do with my not being able to stick with my calorie limit than with whether I eat out or not. The pitfalls are here at home as much as out there. In fact, in some ways it's easier to overeat at home because the food is right at hand.
Jay