Language learning lays a great demand on your memory. There are so many things you have to remember and can recall at any time. Your memory is however a delicate thing. You should follow the way your memory works, not the way you want it to work. One thing you should not do is to force things into your memory when it is not ready to absorb them. For instance, some learners try to memorize the spelling of a complicated word by writing it again and again, ... or a piece of conversation by repeating line by line, and again and again and again. They are actually not memorizing the word or the conversation. They are torturing their poor brain. The right way of doing it is to try to make frequent visits to the word, such as by using it, or displaying it in the places where you often go and cannot fail to see it. In the case of conversation, do not repeat the lines in a boring manner. You act the conversation out, such as by assuming alternative roles and talking to yourself in a mirror or to a tape recorder. You'll never forget the word or the conversation if you memorize them in this way.