For the past year I have been administering the insulin flex pen without priming pen prior to... The pens are new to me as these were not around when I was in clinicals.. I did not know I had to do this (prime) but now I feel like a complete idiot that I "missed the memo" on something so simple and looking back it makes sense to do this..I'm not sure if I was trained wrong or I did it out of bad habit... With larger doses of insulin I usually used a regular needle because I don't really trust the pens... Anyway nothing came from this, my patients were not affected that I know of (but May or may not have gotten insulin) but just bugs me that I let it go on this long without knowing I was screwing up, makes me wonder what other stuff I've been messing up on... I find that I always ask a lot of questions if I don't know something so I don't know how this happened : / Does this make me an incompetent nurse, any similar screw ups? Help!