I understand where you're coming from. The most important thing you need to remember is that you acknowledged that there is something you need to work on to better yourself as a nurse. Please don't let this incident affect you in a negative way. Try to let go of what had happened and retain what you have learned out of the situation to become better. Just be very careful next time and always double check on the medication that you are giving and you're good. I pray for your patient that he/she gets well. Hugs! God loves you...