In order to shift away from the negative thinking that is holding you back from having a positive outlook, you'll need to become more aware of your "automatic negative thoughts". When you recognize them, you're in a position to challenge them and give them their marching orders to move right out of your head.
•Once you identify the negative thought, knowing what type of negative thought it is can help you further battle this kind of thinking and counteract this thought with positive thoughts in the opposite direction.