Why do i still eat my boogers?

So please don't call me a sick little prick,but im 14 and i still eat my own boogers. when i'm in class i sometimes try to make it look like i'm just scratching my nose,but im really just scraping the boogers/snot of the side of my nose,then i wait about half a minute and then i eat it. Also if im just chilling in my room or sitting in my chair on my computer i tend to just clean all of the boogers out of my nose, i personally think its uber disgusting but its a habit/addiction,and i can't stop.i've tried to a few times but i can't go even a few hour(not counting sleeping) with out picking and eating my boogers,PLEASE HOW CAN I STOP.