For those (like me) allergic to NYTimes links here's from Wikipedia:
As described by Woolf, 'moments of being' are moments in which an individual experiences a sense of reality, in contrast to the states of 'non-being' that dominate most of an individual's conscious life, in which they are separated from reality by a protective covering. Moments of being could be a result of instances of shock, discovery, or revelation.
Is that the gist, @evan ?