Rebel Wilson’s personal trainer Jono Castano on mastering self-confidence

He’s the celebrity personal trainer who is best known for helping Rebel Wilson get in shape during her ‘year of health’ in 2020.

But Jono Castano Acero has revealed he wasn’t always as confident as he appears on social media.

The former soccer player, 30, told Daily Mail Australia on Wednesday: ‘Speak to me five years ago, I would put my face down when chatting to you.’

The Sydney-based fitness instructor admitted he’d struggled with insecurities about his smile when he was growing up.

‘I was ashamed of my smile. It’s such a deep topic, I guess. I wasn’t confident in my ability,’ he said.

Jono said that correcting his teeth, growing his fitness brand and working with famous clients had helped him become more confident.

‘It’s tough, a lot of us go through many things in life, and something as simple as changing your smile can help you towards becoming confident,’ he said.

Jono said working on his interpersonal skills was also crucial to building confidence.

‘Confidence comes from being able to go into a room and speak to everyone in that room,’ he explained.

‘And for me, having the perfect smile was such a key boost to being able to do that.’

Jono, who runs the Acero Gym company and has worked with the likes of Hugh Sheridan and Lincoln Lewis on body transformations, also revealed he was ‘scared of failure’. 

‘I’m scared of failure. For me, I’m so driven, I like to focus and when I feel like I’m not headed the wrong way, that scares me,’ he said.

‘You know, I like to keep goals and make them big, and that’s definitely one of the things that scares me the most in life.’