Having a positve mental attitude makes it easier to select better choices and also to feel better about yourself. You will find that there are also some other attributes that go along with having a Positve Mental Attitude like it being easier to be motivated, or even have a sense of adventure. Our brains are fueled by different chemicals that are released from our thoughts. Having "lighter, brighter" thoughts allows our brains to operate in a manner that is more alert and healthy, having "darker and heavy" thoughts create a fog which seems to plague us for a long time. Postive Mental attitude affects other things like self esteem and confidence as well, so it does become a manner of "choice" how you would like to begin to feel today!