Simplest way to an effective study habit
Disconnect your computer from the internet.
Need I say I completed a whole chapter yesterday because I restrained myself from not plugging in that evil LAN cable? Sheesh. I pray (hard) that I double my resistance to temptation now that there’s only 2 more weeks to go before the exam.

Well said. My number one distraction is the computer.
One minute, I am reading a chapter from the textbook, the next minute, I am surfing something online.
That’s why I can only revise well when I am far, far away from my room or my laptop.