I usually trust my intuition about things, but I'm very careful about holding that assumption in check until I have more information. For example, as soon as I met one of my co-workers, I had an immediate impression of the entirety of her personality, but I had to work very hard to not allow that impression to have any weight (meaning, I can't attach any positive or negative value to it). As I've gotten to know her, I've found my impression is a rather close sketch of her person, though I was quite wrong about a few other things.
But I doubt my intuition all the time, too. I never blindly follow my guts. I always cross check it with other information/data/other people's thoughts before I act on it. And when making a difficult decision where I cannot decide completely logically, I will go with what feels right. Usually, that nets good results, because by that point I'm fully aware of the pros and cons of either decision but feel comfortable with the path I chose.