Put a long sleeve shirt on, long pants, socks, whatever it takes to cover up the marks. Maybe you could go for a walk--take a look at the fall colors, the fresh air and exercise will help remove your thoughts a little. If you are at home, go to a room that does not have anything you can use to harm yourself. If you are at work, put your scissors or paperclips or whatever else it is you use in a drawer and lock it. At home, put the items you use somewhere that you would have to make a definate effort to get them. Put them in a bowl of water and stick in the freezer. That way you have to defrost them first and really think about what you're doing. What has happened recently that you want to start again?