Dissapointed but not surprised

Hi all. I took my first GMAT today and was disapointed when I received a 550. A little background info: I have never been good at math, in fact, you can say my math is abhorent. I never had any aspirations to work in business because I always felt I would become a writer. Unfortunately, that dream was never realized and I was left in a serious rut. After school, I wasn't doing much except feeling sorry for myself and I desperately needed a job. I was fortunate enough to get a job in a fast-paced sector of banking. Then things got kind of interesting: I found that I actually enjoyed my field and any confidence that had eroded after I graduated college gradually began to come back. I became ambitious and decided I would take the GMAT. I took a Kaplan diagnostic and scored a 460. I wanted to vomit but I didn't give up. My verbal was in the 83% and according to Kaplan that was almost good enough to teach. The problem was the math; my achilles heel was still causing me problems. I hit the books for four months, but my math only improved marginally. The Kaplan class didn't help much and though their book was helpful, I didn't gain much from it. Princeton's math workout kind of stunk and the tutor I hired didn't get the gmat. Needless to say, I plugged away and today I improved my score by 90 pts. This is very easy to do when your original score was way below average. I scored q28 and v38. I will not give up, regardless of how inept I am mathematically. I need advice on how to improve my math score so I can get a 600. Anything above that would be miraculous. Does anyone have any tailored suggestions, other than for me to start praying profusely?