I self harm constantly? Is this a deal if it's not deep?

it's becoming a daily routine now. when my 'friends' dont reply back to my ims or whatever, i cut. or if im arguing with my parents, i cut. or even if things are looking good. i cut to make everything seem real... there not deep cuts and there cut horizontally not vertically. i heard vertically would kill you. i'm not set to kill myself.