According to US News & World Report, over 80% of people fail at their New Year's resolutions by February.
Author and clinical psychologist Joseph Luciani says it's because we eventually lose motivation and that outside-in solutions rarely work unless we've changed on the inside.
"Unless you first change your mind, don't expect your health goals to materialize," Luciani says. "As the saying goes, it's not the horse that draws the cart, it's the oats. It's not the gym, Pilates class or diet that will change you – it's your mind."