You can be calm and still work hard. Rushing isn’t the same as caring.

Hurry and effort get confused constantly. Rushing is mostly a feeling, and it tends to produce mistakes you then have to undo, while steady work gets more done and leaves you able to think. Looking frantic is also a way of signalling that you care, which is why it is tempting when you are new somewhere. The people who actually run things are usually the calmest in the room.

Next time you feel yourself speeding up, drop your shoulders and finish the task you are on before you start another. Move at the pace of doing it once.