Do things for others - volunteer to work for a charity in your spare time
Connect with people - get in touch with friends with whom you have lost contact
Take care of your body - go for a run.
Notice the world around - take time to appreciate wildlife in your area.
Keep learning new things - learn a new language.
Have goals to look forward to - make resolutions and stick to them.
Find ways to bounce back - learn from defeats to do things better in the future.
Take a positive approach - focus on the happy moments of your life rather than the sad.
Be comfortable with who you are - do not dwell on your flaws.
Be part of something bigger - join a society or club.