My cat is a very well-behaved kitty who knows better than to climb on the Christmas tree. However, if your cat is having trouble with the tree, I suggest using catnip as a distraction or placing an aluminum foil ring around the base of the tree to deter them from getting too close. Another option is to place the tree in a different room, away from where your cat spends most of its time. It's important to be patient and consistent with training your cat, and with a little time and effort, they'll eventually learn to stay away from the tree.