I write about happiness and meaning here but also on Quora. I wanted to re-post my answer below (source).

When you feel the familiar chill breeze of the void opening within you, the deafening vibration of the growing vacuum, the infinite sinkhole of the Big Empty, don’t do what you usually do – reach for the phone, like a Pavlovian dog, and text him or her, right now, or stalk them on social media, or stare at their photo, or bite into a chocolate bar, or stuff yourself with food – whatever addict behaviour you do to scratch the itch. The void anesthetizes your mind so it will tell you very convincing stories to justify the urge. Don’t listen. Do the opposite. Stop. Turn around, slowly, and face it. Face the emptiness. The terrifying void. The nothingness that you keep running away from, that you have never faced before. Face it calmly, openly, lovingly. Breathe deeply and slowly. Let emptiness engulf you. Feel it, really feel it. Embrace it. Then – miracle. The urge subsides and fades. The warm glow fills you. The anxiety lifts. Your soul takes a deep breath. You did it. When you face emptiness, the strangest thing happens. You don’t become empty, you are not devoured and the billowing clouds of darkness do not consume you. Instead it’s as if you go through, you come out on the other side full and radiant. You – 1, emptiness – 0.