Sometimes it’s the smaller things in life that make us smile; a mug of hot tea on a Monday morning or a silly text from our best friend.
With this in mind, online campaign #100HappyDays is asking you to upload a picture of what makes you happy every day to social media or via email, for 100 days in a row. It can be anything – a day out with a friend, a field of pretty flowers, being at home with the cat, the skyline in your favourite city.
And those who complete the challenge can receive a little book of all their happy images to keep.
To join in, visit 100happydays.com
Photograph: PlainPicture/Kniel Synnatzschke