And that's exactly what happened to 26-year-old Dwayne O'Connor. Finding out his partner had an affair, he lost his way with his health. But after a push in the back, the former fitness instructor decided it was time for change.
Speaking to the Daily Mail, O'Connor describes his transformation as the ultimate "Revenge Body."
"I was a young man in a long-term relationship. I was working as a local fitness instructor. I also played basketball regularly and lifted weights three times a week just to keep myself healthy and look decent.
"My relationship was four years old at this point but just like most love stories it ended in heartbreak."
Things turned sour for O'Connor after discovering his girlfriend was unfaithful.
"I came to realise my partner was having an affair and once I confronted her about the situation she posted her keys through the door and said it was over.
"My confidence, pride and self-worth were at an all-time low. I stopped playing basketball and i even stopped going to the gym other than to go to work."
After reaching his breaking point - physically, mentally and emotionallly, his friends rallied, dragging him to the gym. That's when O'Connor decided to take control of his life.
"I was still overweight, but i was lifting five times a week, getting stronger all the time, and most of all i was getting my confidence back."
Taking to Instagram, O'Connor posted the incredible results: In just six months his body fat dropped from 28 per cent to 7 per cent, transforming into a machine. O'Connor credits his previous time spent in the gym for his quick transition.
"Six months might seem fast but because i was a fitness instructor before the break up, i already had a few years of training behind me, so i had a decent amount of muscle already. The motivation came from the lack of control i felt in my personal love life. When a situation happens like an affair there's not much you can do about it. You just have to sit there and let it happen."
Kudos to him.