I'm the kind of person who when I go out to eat will get anything that sounds good. What I've started doing is going online and searching (google or citysearch.com) for the restaurant. If I can find it, I see if they have a menu online and then decide before I even go what I'm going to get. This way, since it's already decided, I won't just decide on hunger impulse and get something bad.
I hope if someone has the same problem that this will help!