"On holiday you have a chance to reflect, and often come up with ideas and projects. You think you'll do it, but you come back and forget about it. Before you leave, or on the plane home, formulate in your mind what the project is going to be.

"It could be something small, such as taking up an instrument or sport, or something more life changing. Do it straight away. Put messages in your diary to remind yourself.

"It helps to relieve the boredom of the return to your normal life, because it is based on the holiday and reminds you of something special you've experienced."

Frank Furedi, author and professor of Sociology at University of Kent