Nurse Practitioner???

I am a student at university in a mild crisis right now because I can't seem to choose a career path/major. I am stuck between pharmacy and nursing(I had a super long post a few days ago and thank you so much to all of you who replied it really helped).

I have heard that Nurse Practitioners are usually more satisfied with their jobs than RNs due to the advanced degree and increased salary.

Is it hard to get into NP schools?

Is it worth the extra schooling to become an NP compared to RN?

Are there part time positions for NPs?

What are some of the duties of NPs?

If you are currently an RN, do you wish you would have gotten your NP?

Is NP basically like Physician's assistant?

Is it a myth that most NPs say they do Dr's work for 1/4 the salary?

Please add anything else you think I would like to know about nurse practitioner.