But new research proves the answer could be much simpler than splashing out on a new car, clothes or watch.

Going for a hike in the countryside is not only good for your health - it helps to keep a smile on your face, the study suggests.

Scientists across the world have long reported a substantial link between spending time outdoors and an improved mood.

Thirteen different factors were assessed, including access to wild resources and stress eased by time outdoors. 

Researchers claim 11 of these had a positive correlation to improving someone's mood, NewsMedical reports.  

Believing the environment was being managed well by those in charge was found to provide the biggest boost in wellbeing.

This is important because those are the 'foundations of why people can interact with nature', lead author Dr Kelly Biedenweg said