Academics at Plymouth University are seeking people who are dissatisfied with their looks, to find ways to help people feel good about their bodies.
The study comes at a time when many people are obsessed with their body image, according to Professor Michael Hyland who is leading the study.
"People are pressured by the media to fit to an ideal which, in the majority of cases, is unattainable," he said.
Volunteers are needed to try one of the two forms of positive "self help".
They will be asked to complete three brief online questionnaires, then download and work through the provided workbook for 5-10 minutes each day over a three-day period.
The researchers will then contact them by email and ask them whether the self-help workbook was effective.
Mr Hyland said: "In many cases, the problem isn't with your body but with the way you think about it - in other words, you don't need to change yourself, just the way you think about yourself.".
One anonymous participant who has already signed up to the study said: "I am glad I took part, I found the whole experience very positive."