Blitzen seems to want to walk me most of the time. I try to get his attention and look him straight in the eye and make him look me in the eye, and I tell him "NO" "NOOO" very sternly and he stops trying to pull me for a couple minutes. And then he starts again- full force. With the weather we have up here in the North, it's very hard to walk him and see where I'm going, especially at night. What can I do to stop him from walking me? I've tried the treat in my hand, but he jumps on my side and it's very cold to have my hand out in the cold for too long. What can I do to stop this?