You Got Into Health Care To Help People.
Unfortunately violence is a part of the job. Maybe you didn't know what to expect, maybe you weren't properly informed, maybe you just aren't as confident dealing with it as you would like to be.
I have yet to see adequate training from an employer to deal with this violence, and when dealing with upset patients, dementia, understaffing, etc, you have to know how to take care of yourself.
If you can confidently take care of YOURSELF, you can confidently take care of YOUR PATIENT.