When an ex-boyfriend called her fat, one Sydney woman found the motivation she needed to shed nearly half her body weight. Hayley Westoby used to weigh 302 pounds (137 kg) at her heaviest, as she told truly. She says her college diet consisted of junk food and a little too much alcohol, causing her to weigh-in at her heaviest during freshman year. But no one’s laughing now, as the 28-year old has an Instagram following of over 12,000 people, with whom she shares motivational posts and photos of her remarkable transformation. “Even on your worst day, remind yourself of how far you’ve come,” wrote Hayley in a March 19 post. “Consistency wins every single time. It’s a lifestyle change not a quick fix.” In the post, she shared before-and-after pictures, wowing her audience. “These results are amazing and so motivating,” wrote one Instagram user. “Amazing work!” wrote another. “What an achievement!” …