We don’t have to tell you how gross it is to bite your nails. There’s literally not a soul alive under the illusion that it’s anywhere near a sexy habit—not to mention the fact that it could very well prematurely age your hands. So even though, according to scientists, nail-biting may be a sign of perfectionism, it’s something you should be looking to quit, and sooner rather than later. But you don’t have to do so blindly. Here, a three-step guide to help ease your transition from fervent nail-nibbler to meticulously manicured gentleman.