A simple question about social habits and relationships

Working as a vendor manager has really shown me how much good collaboration depends on the little, everyday interactions. It got me wondering what’s one social habit you’ve picked up that’s made a noticeable difference, both at work and in your personal life? Maybe it’s something about how you listen, or a small way you connect with people. I’m always looking to learn from others’ experiences, so I’d love to hear what’s worked for you.