This is ruining my life!

Hello all. I need some help/support or just something.. I am 21 years old and I am getting married in 18months time. I cant get married looking like this!! I have been compulsively skin picking since about 11/12 years old. I pick my chest, arms, face, thighs and I also bite the skin off of my lips. I cause myself blood blisters, scars, scabs, blood under the skin and lots and lots of pain. Sometimes I dont even know Im doing it, my chest is the worse. Its usually when I catch a glimpse in the mirror or my partner points it out that I realise Ive been picking again. I think I pick anywhere from 3-10 times per day, rarely less than that. I heard finding the trigger helps but the problem is I pick when Im sad, bored, angry, nervous, etc etc etc. Every mood Im in results in me picking. I look like a freak and have to cover up all the time. Please help me stop :(