How to look forward to the challenge

Gain more confidence. No, its not a stubborn confidence you want here. Each time you get something right, you should feel good about yourself and more sure about the individual answer. Your confidence should reinforce this and make the task more enjoyable. If you have pitted yourself against possible exam questions, fellow students and revised your best, then you should look forward to the day when everything you have worked so hard for should come to fruition.