This is a remarkable series. It kept me glued for the whole of it's amazing 52 hour running time.
As so often, Shin Hye-sun is the most compelling reason to watch this. She invests all of her many emotional scenes with so much sincerity and truth that not once does she ring a false note. The same high praise cannot be extended to every one of her co-actors. However, some of those that appear to start weakly do become more compelling as the series progresses, perhaps because their character's challenges demand more of them as the plot thickens.
I am now faced with filling a "My Golden Life" sized hole in my viewing schedule! Only my faith in the strengths of K drama make me optimistic!