Anxious girl, you are being so brave.
I think one thing that has helped me, although not medical phobia so don't know how relevant...but I decided that there wasn't an end goal. If I wanted to, I might do xxx (I guess get blood taken for you) but I might not. I can always choose, and choose to say no. I will kind of work towards it, but I don't have to do it to achieve anything...it really helped me. Xx