Question 676444
Well, this site is designed to answer more specific questions, so finding a solution to your question is impossible since you don't list what kind of proofs you have problems with. 

But, I would suggest a couple things if you are truly struggling all around: Look at the problem and see if there is anything obvious. If something strikes you as obvious and/or apparent, there is probably a postulate for it. If no postulate can be found, your assumption is most likely incorrect. 

Then, once surveying the problem and writing down the "given" and "prove" parts, start looking at the dreaded theorems. Remember, a question asked on a test pertains to theorems discussed in class, so you just need to jog your memory. It also helps working backwards on some of the problems. 

This is just my two cents, but hey, it helped me get into Princeton! I'm absolutely positive you will ace Geometry this year, and I can't wait to see you in the Ivy leagues. ;) Just believe and work hard!