How do I show I care when I'm under pressure?

You do care. But when the pressure is on, it comes out flat, and the person in front of you feels like a number. That gap between what you feel and what shows is painful, precisely because you are not the cold person you sound like in those moments. Under pressure, your energy goes to getting through, and warmth is the first thing to get squeezed out. The good news is that caring does not have to be a big display. It shows up in small, deliberate things: using the person's name, one unhurried sentence, a moment of real eye contact. Those cost little time and carry a lot. Pick one small warm gesture and make it a habit, even on your busiest day. Say the name. Ask one real question. Under pressure you will not always feel warm, but you can still act with warmth, and to the person on the other side, that is what lands.