Dear Friend,

In order to get the inner motivation to study for long hours without losing concentration, I would suggest that you imagine that once you clear the enginnering exam and successfully complete either your B.Tech or B.E ... then your complete life is likley to get settled.

Right now if you gather yourself and focus completely on your goal to crack the exam and make your way to one of the reputed institutes, then in that case, you will also be able to get placed in a good company.

Think about the life that you would lead once you clear the exam. Think about the happiness that you will get and also the people who are around you, once you crack the exam.

The other important thing is to have faith in yourself. There is a saying, " You can, if you think you can"

Try not get distracted by mobile phone or other such things. Do not stress yourself by continously studying for very long hours.

Try to study for at least two to three hours and then take a break.

I wish you luck as you prepare for the exam.