Like, all the time. At least when other people are in the room. Put away the phone, the laptop, stop tapping your gosh darn pencil. It’s just freaking annoying. Look at the person who’s talking. Better yet, turn you’re entire body to face them, like somebody’s who’s actually interested would do. Maybe take some notes.
It’ll make you look like a great communicator. It’ll also build the relationships you’ll need to persuade and influence people when you need it. Like leaders do.