When focusing on your positive thoughts, and trying to be the best you can be mentally, one should not forget that to be fully healthy, you must live healthy as well.
Now, I am not here to lecture you on getting up at 5am every day to go for a jog, or hitting the gym every night of the week - although kudos to those of you that do. I think it's admirable to work hard consistently to meet your goals, be it losing weight or having a fit body.