A new strategy

If something in your life doesn't seem to work/succeed maybe you should change your strategy. Like now, I know how sleepy I can be after classes and if I force myself to study in afternoon, I'll be just....worn out. So I change my strategy and start to take a nap in the afternoon then wake up in the middle of the night and study until morning. It's good and it's bad. The bad thing about this strategy is that if you have early class (like 9 am class), you sure will get very sleepy if you study until 4 am.