Reminds me of the ending of 'The Masochistic Playpen' (https://www.goodreads.com/book/show/338429.The_Masochistic_P...), in which the protagonist is forced to re-watch every single day of his life from conception, realizing that at some point if he lives long enough he will get to the point where has to re-watch himself re-watching his entire life, a sort of "squaring" of the tedium.