Take a pen and paper and also take your paper entitled "Top 20 Days". Now, write down all details that you can remember from the days which you ranked as #18, #19 and #20 one by one.
To remember the details, focus on each of those three days individually. For searching and finding the details you should imagine everything from the scenes of the day, see the colors in your mind, remember the faces, try to hear the voice and tone of people existed in that day, etc.
You should make yourself totally tired by doing this exercise. Your brain needs to have fun; this is a fun for it, it makes your brain vernal. So go on to find more details.
