Hiya
i have also suffered a long time. I developed my phobia when i was 8 im 22 now. CBT aim tochange your way of thinking. i would never eat certin things in case they made me sick etc. CBT challenges thos things by doing them and the more you do it the more your mind believes its not that thing that makes you sick. I recently had a course of CBT and it helped massively now my fear only rears its ugly head during tmes of stress