Please, please, consider that if your only motivation toward becoming a nurse is for the decent money and employment availability, you are not likely to even make it through nursing school.
That's not at all a judgment against those who have chosen this field in part
due to the money and need to fill jobs. I'm one of those.
I don't believe you have to have a "calling" to be a nurse at all. HOWEVER, without a genuine desire to DO this work, you won't survive the years of clinical time required (assuming we're talking about an RN here).
Much of student work is nasty, dirty, sticky and smells bad. There will be patients who under normal circumstances you would never even want to be in the same room with, and yet as a student nurse you will be probing their genital region. You will be working long hours and studying things that you wonder how they even relate to nursing later on. You will have instructors who will make you feel like an idiot, and the stress of exams and skills demonstrations could put you on medication!
I say this as someone who's been there, done that, and is still happy to be a medical/surgical nurse. But there were also classmates of mine who found out, unhappily, that the clinical setting was not for them: AFTER they spent a ton of money and time getting there.
There's lots of ways to make good money in fields that hold genuine interest for you. I'd take a look at them.