Phobia of needles, taking a blood test tomorrow morning...HELP PLEASE!!?

i just came back from the doctor and he told me i needed to get my blood drawn. my mom said that tomorrow morning would be a good time. but the problem is that i HATE needles, i am sooo afraid of them that it has become ridiculous. whenever someone mentions the word "needle" i instantly tangle my arms together in front of me. when i think about getting bloodwork done, i scrunch up. i cant look at my veins because i do the same thing. i have tried everything to take my mind of it when im getting it. i held my mothers hand once, but after it was done, i saw that i had crushed her hand so tightly that her ring left an imprint on her other fingers. i tried thinking about a song that i love, but as soon as i sit in that chair, i forget the lyrics. i need something that will take my mind off of it by tomorrow morning. please help!