3 good things diary
This is a great activity to start with your students and them set them as challenge for the week.
Research (Seligman et al. 2005) shows that when we take time to appreciate the good things in our day we programme our mind to notice more and more good things. Generally, this helps to make us feel happier because we stop taking the good things for granted. Even on what seems like a bad day, there are always small good things to notice.