any tips or tricks for time pressure in the verbal section?

Hi,

while practicing, I realized that my prob is stress!
i get so stress during gmatpreps and try to rush and then i end up with a few min left at the end of the section....so i rushed for nothing!!

i can control that a little in the math section, however, my main problem is the verbal section. I already have difficult in english, so imagine if i also have a prob with stress = disaster

I'm ok with the first few questions, but then loose my concentration by question 10!!
cannot concentrate any more and start thinking about family, friends, other plans if i dont pass gmat!!

i try to focus, but when im faced with a difficult question, i give up quickly and dont even think about it!!

in the gmat prep, i scored 430 - Q:34/ V.16
i need 550...so im not that far...if i can control my stress i can improve my Verbal score

not sure how to manage my time. I know that for each question, I need to give 1.8 min...so do I keep my eye of the time after finishing each question?? ill then waste a few sec after each questions calculating the time left!!

any ideas?
how to relax? how to keep self-confidence high during the exam? how to make sure that im ok with the time left? I always take the 10 min break, but not enough for me