Spend more time socializing with friends and family. Being around the people you care about will help you smile and laugh.
Seek out humor yourself. Put on a funny video, read a humorous book, or play a fun game with friends.
Practice smiling in front of a mirror and take note of how you feel. Memorize that feeling so you can more easily recreate that moment whenever you like.
Reflect on the things that make you happy or the things you’re grateful for in your life.
Place reminders on your calendar and around your home encouraging you to smile.
Get a pet. According to scientific journal Frontiers, animal friends have been proven to help humans release endorphins like oxytocin which lowers blood pressure, decreases depression, alleviates anxiety, and creates a sense of calm. Of course, this will make it easier to smile as well.