Have you ever made a mistake when treating a patient? What did you do?

"Yes, I made a mistake as a new nurse. However, I learned from that mistake, and it has fortunately never happened again. I was starting an IV on a patient, became distracted, and forgot to release the tourniquet. I realized my mistake a minute later when the IV tubing started backing up with blood. I quickly released the tourniquet, and the IV started flowing. The patient was not harmed, but I did point out my mistake to my nursing supervisor as I was embarrassed I had let that happen. She commended me for being honest and said to pay better attention in the future, which I have."