Most fortunate in my life thing is a long time ago that one day I met you.这句语法有错误码?

问题描述:

Most fortunate in my life thing is a long time ago that one day I met you.这句语法有错误码?
如果有,应该怎样说

肯定有了
我帮你改我生命中最幸福的事 是在很久以前,有一天我遇见了你The most fortunate thing in my life is that one day I met you a long time ago.