How you act in a long checkout line says more about you than your bio does.

Character shows most clearly in situations with nothing at stake and no audience worth performing for. How you handle a delay, and the person in front of you who is causing it, is unguarded, which makes it far more informative than anything you would say about yourself on purpose. Small frictions are the honest test.

Pay attention to your own behaviour in the next pointless wait. Notice what your face is doing and who you are quietly blaming. Practising patience in trivial situations is how it becomes available in serious ones.