It's obvious that splitting the big task into small can make it easier. You can't grasp a language in three days, you have to practice it every day. You can't accomplish a complicated program immediately, you have to write only one piece of code at a time. You can't go upstairs to 3rd floor if you don't go to 2ed floor before. Isak Dinesen, a famous femal writer in Denmark who wrote Out of Africa, once said," When you have a great and difficult task, something perhaps almost impossible, if you only work a little at a time, every day a little, suddenly the work will finish itself."