Obesity treatment needs to be conducted in conjunction with the correct mental approach.
Ursula James, author of You Can Think Yourself Thin and visiting teaching fellow at Oxford University Medical School, believes that weight loss is very hard and can only be temporary without a positive mental attitude.
"It can either help or hinder. If you haven't got your mindset right - forget everything else," she said.
Ms James explained that most people are aware of what sort of foods they should be eating, but they tend to talk themselves out of it and a diet needs to become a constant way of life for it to be successful.
She advised those looking to lose weight this year to take each day as a "single unit" and track their consumption in a food diary, as this will help to show them what can be successful in the future.
John Dixon, associate professor at Monash University, recently told the Royal College of Surgeons that bariatric surgery can play a role in the complex treatment of obesity.