I can relate to your situation. I have social anxiety but become generally nervous in situations like the LSAT or even some random ones like answering the phone. I found meditating can really help. I don't mean the crossing your legs and chanting "oum", but just breathing. Try this, close your eyes, put your hands on your chest and breathe through your nose and out through your mouth. Don't even think about breathing, just let it happen. Clear your mind. Also, when you inhale, your belly should be expanding not your chest, hence why you have your hand on your chest. This is called belly breathing and its worked wonders for my anxiety. My diagnostic was a 133 and my Sept. 2016 result was a 152; Sept. 2017 was a 154 and my Dec. 2017 mark was a 159. I was averaging between 161-163 on my PTs for the most recent test. You can improve and not let your anxiety take over. During the Dec. test, I went in with the mentality that I didn't give a rats ass about what my score was. My problem was that I would focus to heavily on getting a high mark and it led me to second guess myself on numerous questions. Had I not second guessed my self on the Sept. 2017 exam, I would have gotten a 162. Trust me on this, you can and will improve with practice. It took me a year but I eventually did overcome it. Best of luck!