IELTS ( help me )

Firstly , when I attended the pre fac module , I was aware of the real Ielts test will be very difficult because of diagnostic test.I know myself that I always tend to study lessons especially English . But now I cant study satiably . The Ielts test will be  coming soon.Unfortunately I am afraid of taking Ielts . I really want to go my city in summer . What can I do about this subject ? Do you have any idea ?