-----请帮我更正英语，如果语法错误最好能备注一下我的错误的原因。不胜感激。

It times could return if I were children and were the school of student . I could must be not before fettle.
Live always going to do everyday then we must go ahead pland it of myself

如果时间可以倒流的话，我还是小孩子的话，如果我还是在校学生的话，我就一定不会是以前那个样子了。
生活总是继续，只能不停的安排自己。

1) if time could return (it 可能是打错）
2） were a student (在校学生，这样说就可以了）
3）I surely would not be as I used to be. ( could 和 must 不能同时用。 use to be/do 过去是或过去作某事。
4) life always goes on,生活总是要继续的。
5）we can only make a plan constantly for ourselves. 安排自己 不至一种译法，如： arrange oneself/deal with
你的错在 go ahead 后面不能直接跟动词 plan 如果要用的话要用连词连接 we must go ahead and plan our life.