Who did really good on their SATs?

Im like a really good student in all my academic cles, but when it come to the SAT, im not soo good. anyways on the psats, i got like 1338, (i know, its HORRIBLE) i dont know what happend!! but the SATs are coming up in june and i wannna do reallly good. so any advice? if you did good, how did you study for it and what sat book did u use? ihave princeton review 2010, i finshed the whole book and took a practice test and got aroud the same grade i got on my psats, ahh. so ya? what should i do? Its so confusing. Also, how many hours a day did you study? and its just weird cuz im really good at everything else, except for the SATs.