I've taken off two months, three months at a time, and, by the end, I get really squirrelly. My night life, my dream life, gets extremely populated and crazed.
You couldn't get hold of the things you'd done and turn them right again. Such a power might be given to the gods, but it was not given to women and men, and that was probably a good thing. Had it been otherwise, people would probably die of old age still trying to rewrite their teens.