How can I raise my 650 (Math) to the 700s?

<p>Hello CC community. I have been using this forum quite awhile to help me study for the SAT, but i never registered as a user. Besides that... I have been practicing for the SAT math, but I've been consistently scoring within the 650 range. I am almost finish with the Blue Book, but i can't seem to break this 650 range and enter into the 700s. The problem I am having is with the hard questions. I feel like I over think them. I was wondering if anyone has any advice or materials that may be able to help. Thank you!</p>