Carry-Ons

Daily writing prompt
What is the most important thing to carry with you all the time?

Because of my medical history (diabetes, no pituitary gland), the most important thing to carry with me all the time are my medications, especially my insulin and hydrocortisone. Next in importance: reading glasses, pen, wallet, and keys. I guess I should be happy I don’t also have to lug around an anvil, though it feels like it some of the time.