Accept reality with your body. Relax (by letting go or by just tensing and then letting go) your face, neck and shoulder muscles and half smile with your lips. A tense smile is a grin (and might tell the brain you are hiding or masking). A half smile is slightly up turned lips with a relaxed face. Try to adopt a serene facial expression. Remember, you body communicates to your mind.
Half Smile in a Lying Down Position – Lie on your back on a. flat surface without the support of mattress or pillow. Keep your two arms loosely by your sides and keep your two legs slightly apart, stretched out before you. Maintain a half-smile. Breathe in and out gently, keeping your attention doused on your breath. Let go of every muscle in your body. Relax each muscle as though it were sinking down through the floor, or as though it were as soft and yielding as a piece of skill hanging in the breeze to dry. Let go entirely, keeping your attention only on your breath and half-smile. Think of yourself as a cat, completely relaxed before a warm fire, whose muscles yield without resistance to anyone’s touch. Continue for 15 breaths.
Half Smile When You First Awake in the Morning – Put something in plain view on the ceiling or a wall so that you see it right away when you open your eyes. This sign will serve as your reminder. Use these seconds before you get out of bed to take hold of your breath. Inhale and exhale three breaths gently while maintain a half smile.
Half Smile During Your Free Moments – Anywhere you find yourself sitting or standing, half smile. Looks at a child, a leaf, a painting on a wall, or anything that is relatively still, and smile. Inhale and exhale quietly three times.
Half Smile White Listening To Music – Listen to a piece of music for 2 or 3 minutes. Pay attention to the words, music, rhythm, and sentiments of the music you are listening to (not your daydreams of other times). Half-smile while watching your inhalations and exhalations.
Half Smile White Irritated – When you realise, “I’m irritated,” half-smile at once. Inhale and exhale quietly, maintaining a half smile for three breaths.
Reference : https://www.mhs-dbt.com/clientresources/