stop being negative

My boyfriend and his brother tease me and call me Debbie Downer. I find myself about to say things that seem like the stuff she might say. Now that I am aware of it I stop myself, but I would like to eliminate some of the negative thinking that goes on inside my head too. This is a big challange for me because it goes along with my depression, which I cannot change with just will. I can change my outlook on things though. And avoid negativity. Like my New Years resolution to stop reading tabloid type magazines…that is negative garbage I don’t need to buy into.