Getting tossed off a horse and walking it back to the barn calm is a skill. Composure after a fall can be practiced.

The minutes after something goes wrong are not fixed personality, they are a trained response. The adrenaline arrives either way, and the difference is whether you have a routine ready for it, something to do with your hands and your breathing while the shaking passes. People who look unruffled have usually been there before and know the order of it.

Decide now what your version of walking it back looks like: a long breath, checking yourself over, one simple task. Use it on small things this week, a dropped tray or a wrong answer in class, so it is familiar when something bigger goes over.