I just Beat The GMAT!

Well my first GMAT attempt got me a 570 (Q41, V24), that was two years ago, it didnt surprise me much. My mock test scores ranged from 550-620. Then 21st July 2012 I decided to give the GMAT again. I wanted to apply the same year itself which didnt give me a lot of prep time. The max I could give myself was a 18th Sept as date for the exam. My work is not very hectic, and it gets over by 4 in the afternoon. So i studied everyday since July 21st.

I first did OG 12, then Kaplan 800, Manhattan SC, I took a mock test and got 590. I also did Manhattan Series, Powerscore CR. And practice questions from the blog. I took a couple of mock test i scored a max of 670 (V29, Q49), I also scored 610 on Manhattan Free test. So I knew hoping for a 700+ was wishful thinking but I wanted at least a 680-690. Anyways I took the test, I kept telling myself to stay clam, I found quant a little more difficult than the questions i attempted at home, but the verbal took me for a ride. Literally. ok, so I wasnt 99% sure of my answers but kept eliminating choices and went forward. I did feel in between they were giving me relatively simple parallelism question but I didnt pay much attention, I just kept moving forward making sure i wasnt taking too much time on my questions. When the screen popped with a 510(V19, Q42) I was shocked, angry and didnt quite think it was possible. yes, I am defeated. I was probably arrogant in thinking I couldnt go lower than my 570 of last time. I guess I was wrong.

My weakness: I used to think my Quant was relatively strong, till I never managed a good score ever I realized maybe im just fooling myself and its really just average. I could never get those permutation combination questions right ever. I almost never get them right unless i make a fluke guess. Verbal has always been my mortal enemy. I am terrible at CR, could never make any sense of RC questions and SC became passable only because of Manhattan Sc, else even that was terrible. My main problem is that I used to analyze my mistakes in CR but they used to still not make much sense to me. Like i would eliminate wrong answers and get stuck on the last two choices and then inevitably choose the wrong one. RC was something I used to never be able to get more than 50% hit rate ever. I tried the manhattan way of making notes while reading them but somehow during the actual exam I attempted it the old fashioned way of reading - not understanding- guess working the answers (incorrectly might I add).

I dont think I have it in me to attempt it a third time and get an even lower score. And now all prep material looks familiar so I will be making choices from what I can recollect of my last studying. So does anyone think I can get a 700? or should I just give up and go into something that wont make me feel like a super dud. Everyone's 700 success stories just gave me unrealistic hope that maybe I could do it and GMAT just set me straight and told me Im playing way out of my league. Might I also add that now I'm apprehensive to talk to people cause there is a part of me that is now convinced that the English I was proud of at one point, is in reality, very very poor.

So my question is: Should I do it again? If so, should i try it after a break or right away? How do I change my studying approach? Should I consider a private tutor? or can I just give up? :)