A clydesdale no more!

It looks like this is your second ~60mpw week, before that there were 2 50 mile weeks. It doesn't seem like a big jump in mileage, but maybe for you it's the threshold of what you can currently handle. I had similar situation more than a year ago, when I first went from 40-45 to ~55 mpw. No energy and no motivation. I was able to adjust after couple of weeks although still didn't feel great. After 4 weeks of 55mpw, however, I ran a PR in 20K, so higher mileage does pay off. Don't get discouraged just yet. Try slowing down the pace to whatever feels manageable, even if it's 9:00 pace, but keep up the volume. The training effect will still take place. Don't do any speedwork, hills or tempos, just strides 2-3 times a week to maintain leg turnover. You should be able to adjust. Oh, and of course, try to get enough sleep and good food.

Thanks for the comments Maria. I was running in the 60's earlier this year leading up to Boston. Since then, I have kept the mileage at 50 mpw. Since I started ramping back up, I also increased the intensity a little. I think that this is what causing some of the problems. Sleeps always a problem for me (I get about 6 hours per night) and nutrition isn't my strong point. That's something that I always say I would like to improve but really never do anything about it.

Running high mileage is like driving fast in a car. At a certain speed you cannot be talking on your cellphone any more. Little things begin to matter and you start paying a higher price for minor negligence.

I second Maria's advice - back off the pace, eliminate speed work at first to get used to the distance. And be determined to the point of doing it on the sleep and diet. You must treat yourself like a teenager. Set strict limits with consistent and unpleasant consequences for breaking them.