Do you want to do anything in life that doesn't involve sitting on a couch or laying in bed? Well you need a good amount of energy to do it. Seems straightforward... Until you grapple with what that requires.
It means eating well, sleeping enough, and drinking lots of water... Every day. Feel lazy, unproductive, anti-social, or tired? Eat good, real food, get a good night sleep and drink a glass of water or two.