i'm new! advice please?

i'm a 19 year old female and i've been picking my scabs for as long as i can remember. my grandma did it & my dad did it. the only solution...even a little bit...that i can ever find is getting acrylic nails. even then, i just carry tweezers around with me and pick my scabs that way. recently i've been plucking hairs...and i dig hard sometimes to get a hair out, and then this causes a little bumb which turns into a scab and i pick it and pick it and pick it. my boyfriend thinks it's gross but i just cant stop. is there medication for this? someone give me some advice :(