My lovely writing morning had vanished. I had under an hour left before the real world intruded. It hardly seemed worth opening the new novel file, but I decided not to berate myself for having wasted so much time on surfing, and instead get on with some writing. And then proceeded to have the most useful 45 minutes I've had on this novel. Suddenly the first quarter, which I 've been struggling with these last few months, fell into place. I could see how the scenes were going to work and interlace with each other.
It was good to be reminded that time spent with the novel, even if it isn't the ideal, is never wasted. Any time is better than nothing, and in this case, it was just what was needed. So grab whatever time you can - even ten minutes can make a difference.