First of all I would like to know that you are in 11th grade or 12th grade. Regarding the motivation that you require I can completely understand your nervousness at this point. Most of the students pass through this. So my suggestion is if you can enroll in my counselling sessions I can assure you that you will gain confidence and right approach towards your preparation which is very important. Also by enrolling with me you will be regularly be in touch with me and I can guide you for all the difficulties that you will face during your entire preparation time.