Truth is, there's really no time for nerves. Abandon your fear, and have confidence in yourself! You're always learning in nursing, too; if there's anything you can't do/recall, don't be afraid to...
...there's so much b.s. paperwork that you have to do. I suppose, looking back on it all, it was necessary because it helped 'drill in' important ideas, but I'm a fast learner and found it repetitive...
It's best not to become emotionally invested in difficult family relationships. Treat difficult parents like 'customers', and keep the patient at the forefront in all you interventions. Stay focused...
You have to do what you want; it sounds to me like you need a change of scenery, and that is one of the wonderful things about this field--you have flexibility. Have you ever considered