Think of something special you've been wanting to do but felt you couldn't. Now make a list of reasons why you can do it! Too many of us whip and defeat our desires simply because we concentrate on why we can't when the only thing worthy of our mental concentration is why WE CAN..
Look at things not as they are, but as they can be. That's one of my LOVELY and effective thoughts in my mind right now.
Visualization adds value to everything, a big thinker always visualize what can be done in the future. He isn't stuck with the present!