Toilalong - Listen to me!
I have taken it 5 times (maybe more - I've lost count), I finally just passed. Take a good look at your diagnostic. If you have done poorly on something 2 or 3 times, it's not chance - you need to work on those. Get as many practice exams as you can: Chaya, Complex Imaginary, PPI, Kaplan, NCEES....whatever - they are all pretty good. Take 5+ exams "live" as close to the real thing (desk alone, no distractions, no music, nothing), time yourself (do it in 2 hour blocks if you need to), DO NOT LOOK AT THE ANSWERS while doing the exams, and score yourself when you are done. You will start to see a pattern on what you are doing wrong also, I could have passed on the first try had I studied this way - I wish someone would have told me this. You've learned enough of this in school to pass, now it's just understanding the format and practicing. My school didn't cover anything on transmission lines, especially not real life, maybe theories is all, we barely touched on per unit, and I passed. I did have a lot of circuits, transformer, NEC, and lighting knowledge - some areas that others struggle in.
I know what you are feeling; I was just there. It's humbling and humiliating too. I was feeling pretty down on myself, my intellect, my education (sick and sad really)..... I did very well in school, HS (almost 4.0 GPA and 31 on my ACTs) and College (3.75 GPA), never was a real good test taker, but for this - just practice, practice, practice. There is enough material out there to test yourself back to back to back to back and see what your doing wrong. Not every 6 months and hundreds of dollars at a time, but weekly. I took at least 1 a week, every chance I had an hour I tried to do 10 problems. Before work, lunch, dinner, bed....whenever you can get a block. I averaged an exam a week at least, studied for 5 weeks before the exam only. We are all busy, you make time. I have a 2 year old in daycare, a rental house, an engineer wife who is busier than I am, a fixer-upper current house, addiction to sports, needy parents, niece+nephew in college who need help sometimes, a lazy brother - and I know other people have it worse than me.
IT WILL HAPPEN. PM me if you want more specifics on what I was lacking and what exams I used. Heck, maybe I'll sell you some of my stuff for cheap if you want.