What Happen If One Day...

What will happen if one day you suddenly lost your memories??
Suddenly I came with this question to myself today. I got thought of this question before last time when I was in the age of 17. That was because a friend of mine was playing as if his memories was lost. I was so scared and I cried on the spot. I don't know why I cry that time. I was too afraid if my friend suddenly lost their memories.

As to myself, I got thought of it before but I just can't get the answer right. I really don't know what I will do if suddenly I woke up and I lost all my memories. I think I will be another person to everyone. I won't be able to be like the same old me. Everything for me will be totally new. I am new to the whole world. Everyone know me but I don't know them including my family.

I might go to class or work (in future) as usual but I don't know which class do I attend, who is my lecturer, where is the classroom, who is my friend, who is my classmate, what subject I'm attending, which floor I work, which department I work, where is my seat, who is my boss, who is my colleague, what job I was handling a day before, who is my partner in doing those.

Where I will be that time? What I will be doing that time? I'm serious in this question that's why I am asking myself about it now. If one day I lost my memories, what my family and friends will do about me? Leave me just like that? Change my lifestyle? Change me an obedient girl? Telling me all the bad things about me or telling me the good things I did and purposely make them into bad points of me?

Sigh.. I really wonder...