Is there any way to break habit of twirling my hair?

I have this horrible habit that I seem to ALWAYS be doing something with my hair..twirling it, running my fingers through it. I cant stop, no matter what I am doing. Even my co-workers make comments to me about it because it never stops. I realllly want to stop because it damages my hair and I even annoy myself with it...any suggestions? I know people will likely say "do something to keep your hands busy", but what?