I'll admit, I should be better about my diet and exercise too. However, I am plagued with the same issues of lack of energy and motivation to better my life and I also have a "mental disorder" I was born with. I prefer to call it a 'societal incompatibility' or 'evolutionary maladaptation' -- much like an appendix which may have once served a more important purpose many moons ago, but tends to only cause issues in today's time.