scared, frustrated, ready to give up

0 Medication errors.
They are so easy to do! It is scary how many errors I see, even the simple ones, and scary the errors I have made.
I have recently made a med error and I am about ready to throw in the towel. I gave the medication the wrong route, and in the end the patient was okay.
It is so easy to make errors, and I feel a lot people dont report them because they do not want to get in trouble.
I do the checks on medications, but this one time I missed what route it was. 99% of the time this medicaiton is given IV. It was also ordered for the wrong time which made the error easier to make.
The handful of medication errors I have made, no harm was done.
It really is making me consider giving up on nursing.
I want to help people, not do them harm. How do I move past this? How do I move past the fear of making another med error?

any thoughts? comments? suggestions?