How do I stop touching/playing with my piercing?

I got my nose pierced on the side a few days ago. I realize that the worst possible thing I could be doing is touching it with my grubby little fingers, so of course that’s exactly what I keep catching myself doing. Are there any psychological techniques or devices that can be employed to keep me from playing with it? I still have to be able to function in the world, so it’s not like I can put socks on my hands or something. How do I get myself to stop touching it?