Mistakes truely is the best teacher one can ever have, I can vividly remember a scenario that happened while I was in school, I had this full idea about a particular subject and because of that I ignored picking up my book to read I was busy reading other books, and to my greatest surprise during the time for writing that particular subject I got to the examination hall and things were really different, and I ended up failing that subject which gave me an extra one year. Sometimes in a man's life it is good to make mistakes and believe me when you do you will never go back to such mistake again. Like the life of the great Thomas Edison according to record he tried his creation 199 times and he failed before he was able to achieve his desire.