SMILE Just like changing your posture, smiling sends positive signals to your brain. It can even trick your mind into thinking you’re feeling better than you actually are. Smile at yourself in the mirror or make eye contact with the people around you. Not in the mood? Watch a funny video, look at old pictures or put on your favorite song. There’s always something that will bring a smile to your face. Eventually, you’ll master how to improve mood and mindset.