I need time to concentrate on books these days. Recently, I usually read a book before going to bed. The problem is that I always tired and sleepy at that time. So, I can read a book only a little and fall asleep. I’ve been reading a thriller novel called ‘Guest List’ recently, I’ve read only 30 percent for a week. As the reading speed slows down, it gets boring. When on earth is gonna case in t..