假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误, 每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加: 在缺词处加一个漏字符号(∧), 并在其下面写出该加的词。
删除: 把多余的词用斜线(＼)划掉。
修改: 在错的词下划一横线, 并在该词下面写出修改后的词。
注意:
1. 每处错误及其修改均仅限一词；
2. 只允许修改10处, 多者(从第11处起)不计分。
There was a time when I was disappointing and helpless. It seemed that I was left behind in school. In addition to, I was facing with many obstacles to study. Fortunately, I read book about gratitude and life. It told many stories about a man overcome difficulties. In the book, a sentence moved me deep: when God closes a door, somewhere she opens a window. The sentence gave me power and confident. Before long I learn to taste the joy of life through reading, that really changed my attitude to life.
