I'm not sure this happened with anyone else, but my symptoms eventually show themselves in such a way that I realize it's just anxiety.
For example, my chronic abdominal pain went away when I was heavily distracted. Also, there would always be that split second after I wake up that I forgot about it....then I would think "oh yeah, the pain" and it would slowly start creeping back up.
Eventually, on the last day of summer vacation, I was at the beach looking out to the sea. I told myself "this is just anxiety, and i'm not going to fall for it anymore". After that day, it vanished as mysteriously as it arrived. It still returns sometimes, but only when i'm very anxious.
Even now, with these weird "attacks" that I get once every month or so. I get a weird sort of irritation in my lower right abdomen, tenderness, and pain whenever I move a certain way, or lift my leg. They last a few days, but I always get back to normal. The last 2 were caused by a panic attack, and my latest was shortened from a week down to 2 days just with my brain power alone.
I couldn't accept it at first, but I now believe these attacks are caused by my anxiety alone. There was a 8 month period where I didn't get them, and during those 8 months I wasn't anxious about my abdomen. Heck, during 5 of those months I completely returned to normal and felt 100% fine.
Anxiety is such a strange thing, and sometimes our brains are too powerful even for us to control.