As I have already mentioned, I didn't attend the school (best strategy for JEE preparation). This left me with a huge amount of time. We had 3 coaching classes a week. I used to wake up in the morning at around 6.45 AM. At around 7.30, I was ready to study. My parents ensured that this schedule was followed strictly. My peak study time (the time when you get maximum output for a given input) was from 7.30 AM to 10.30 AM and i tried to avoid any kind of distraction during this interval. This time is very crucial for your preparation and varies from student to student. Some students are comfortable at night but I avoided night studying. I hardly remember any day where I can imagine myself studying after 8 PM.
During your JEE preparation, you will have to face many barriers and to be successful, you need to tackle them wisely. Many people start the preparation with a huge energy but soon get distracted - malls, friends, family, cousins, relatives, girlfriends, boyfriends, cigarette, drinking and a bunch of other stupid things. Seriously, I would say that "Shut your brain for everything else and bang your head on the books!!!"
Everything will be yours if you get a decent rank in JEE and I promise you that your relatives would be the first one to "taunt" you or better "leave" you if you fail..!!