I'm new to this - please help! I could really use some advise and support

Hi guys, I'm Hannah and I'm 19 from England. I think I've been suffering with this disorder for about 5 years, but only realised what it was I had about a month ago. I pick anything on my body that resembles a spot and as a result of the disorder, my upper arms are covered in flat, pigmented scars. I started off by picking my chest, which has cleared up a lot with time and a course of microdermabrasion, but the problem on my arms is much worse. It is literally taking over my life. I am young and soon to be starting my second year of university, but these scars are holding me back in a time I should be happiest and feel the most free. They control every decision I make and are are always at the forefront of my mind. I actually only told my mother about the problem with my arms a month ago (which wasn't easy to explain) as we were going on holiday, so obviously she would find out. Soon I am going on holiday with my father and sisters, which I should be looking forward to but instead I am dreading because I will have to tell them about this. I love fashion and would do anything to be able to wear anything I want. I felt I was restricted by the problem on my chest, but that was nothing compared to what it is now. I went to see the doctor and he said I could have CBT but with me being at university, it would be difficult for me to have the treatment. I am using bio oil to try to reduce the scarring and I am at the beginning of having a course of microdermabrasion on my arms, and as much as I am trying to stop myself from picking, I often have relapses. I really wanted to know how people are managing the disorder without the option of CBT, and if you have any tips on how to reduce my scarring and stop myself from picking. I am so sick of it now and I would greatly appreciate any help/advise you have. Thanks Hannah