不过积年累月的错误就是经验。经验带领成功。

But year's later collection of mistakes is called experience, which leads to success.

积年累月，笔耕不辍。 正是通过这种全然的写作行为，他成为了一名作家。

Through the sheer act of writing, he became a writer.

所以积年累月下来存在的问题，就不该叫做个人认同感的问题，而仅是认同感的问题。

So the problem of existence through time, or persistence through time, shouldn't be called the problem of personal identity, but just the problem of identity.