Penned by Aristotle over 2,300 years ago, Eudaimonia is an ancient Greek philosophy used to define a person's state of happiness (implying wellbeing) and often described as 'human flourishing'.
We'd love to find out what represents happiness in the UK and how this is affected by age, location and lifestyle - and this is where you come in…
We’re challenging you to put your photography skills to the test, and capture your happiness in one photo; whether it be of a person, an object, an activity or something completely different all together.
Upload your picture using the form below, telling us why it encapsulates ‘Eudaimonia’ for you and you could be in with a chance of winning £500 (or an iPad if you're under 18).
The competition closes on Friday 30 June 2017 at 5pm (GMT). Please ensure that you have read the terms and conditions of the competition before you enter.
We're looking forward to seeing your entries. In the meantime, please email us if you have any queries about the competition.