I frankly don't. One, I find it doesn't work (same with saying, "I'm going to sell something today"...what, does your effort into your work change this day over last? It's great to be positive and all, since it makes you cheerful, but I always put in 100%, so saying it doesn't help). Second, though, I find it makes me cocky. There are many putts I know I'm not going to sink, but if I try then I'll hit it too hard and overshoot if I think it's going into the hole, rather than a strategic lag. I don't aim every shot for the hole, I aim it with the big picture in mind.