Hello and welcome! I am currently a nursing student in DE. I did take the NLN and I actually did fairly well on it. The NLN isn't that hard, however, it is very time consuming. I took it a year ago. The best advice I can give is:
1) RELAXE!!! Don't stress yourself out.
2) Learn as many prefixes, suffixes, & roots as you can. The reason for this is b/c on the NLN, in the reading section, it will ask for synonyms and antonyms for words you have never even heard of. If you know parts of the words you can more than likely figure out what the word means. Trust me on this!!
3) get a full nights rest before the exam
4) eat a bowl of healthy cereal for breakfast (Cheerios, Frosted Mini-Wheats, etc).
5) Wear comfortable clothing!!! This is extremely important b/c if you are unconfortable, you will defocus from the exam and won't do as well.
6) Lastly, reveiw the basic math skills, (multiplication, division, long division, fractions, decimals, rounding, finding the mean, median, ect).
As for the rest of the sections on the NLN, you either know it or you don't. Like I said try not to stress and follow the suggestions that were given to me. You will befine
PS. as for being able to stomach nursing, I really don't have any advice on that. I fortuantly have never had a problem with stomaching the different things nurses need to do. Don't worry you will know if you can handle it or not by the time you finish the labs in Anatomy & Physiology.