if you really want to entertain the notion, breaking the cycle would necessarily mean erasing yourself entirely from history. there's interesting consequences of that (as history would take a different path without you, however miniscule), but it's not what i was thinking about at first.
what that means is we could never know of anybody that's actually succeeded, because all trace of them would cease to exist.
it follows that all claims of enlightenment through this process are necessarily false.
but, frustratingly, it doesn't eliminate the possibility. it even opens up explanations as to why the event seems so rare - we can only remember the fakes.
it's remarkable how these ideas can reinforce themselves through seeming absurdities.