Keep active - do something physical each day. Could be as simple as taking the dog out for a walk (if you've got a dog!), but could be going for a swim, or going to the gym every day.
Peter KindermanThere's real evidence that getting involved in charitable activity (and it's probably better to give your time and effort, rather than money) makes people happier.
Peter KindermanMaintain your relationships - for all kinds of reasons, friends are vital. Good friends, supportive friends, friends who won't judge you or try to take advantage of you.
Peter KindermanWhen you notice an unhelpful emotion or a shift in mood, or when you notice that you're doing something you know can cause problems (being snappy, for example, or drinking too much), that could act as a cue to examine your own thoughts - "what am I thinking?".
Peter Kinderman