The most difficult time of my life.
What is difficult?Is it the moment when i tried using my lungs for the first time when i came to this world?Or is it that first step I took with the aid of a chair?All of those times were difficult,but what's the most difficult is growing up.Growing up is a long and painful process,years go by,and you still can't be sure if you have grown much at all.You have to learn to leave the comfortable shelter,physical and psychological,your parents gave you.You have to learn to be an entity alone.You have to learn to let go of your childish sentiments.You have to learn to be responsible.These are all traits that your parents and teachers has been trying to instill into you for the longest time,but now,for the first time,while trying to grow up,you have to apply these traits and make them into an everyday reality.It is hard.It is difficult.You will or you had fallen flat on your face,and you still don't know what to do next.That is growing up.When the moment comes,when you realize,all of these responsibilities has been burdened on to you,with others in addition,and you want to escape from all of these,but you can't,only then,can you be sure:"Ah,I'm all grown up now." And that,is the most difficult time of my life,learning to grow up.其实,你就给一个题目,不给多一点guidelines（帮助／提示／规则）,很难很好的回答你的问题.那么,我就随便写了一篇,如果不够好,或你有什么不懂的,你就给我评论,我到时再详细作答.