It really depends on why you failed. Think back to most of your questions where they content, prioritization/delegation, critical thinking? If nothing really sticks out, are you a bad test taker?
I passed my RN Nclex the first time, 75 questions, in about 30 minutes. This is what I did:
-Hurst online for content if you need it and can afford it - I called it "Nursing school in one week" (if you don't need content pass on it)
-Saunders- my strategy was to take the end of chapter test, if I scored over 70% I moved on to the next, under that I read the entire chapter.
-Lots of question, pay for them if you want, but free would be just as good. You need to build up the mental stamina to answer questions and still be on your game.
-Relax, because having anxiety won't help. repeat the affirmation "Nclex is apart of my past, I have already passed"
-Jam to your favorite music the morning of the test, and on the way to the test center, it always put my in a really good place before taking exams.