Book Blocked

I'm book blocked.
And blog blocked.

I can't seem to blog and I can't seem to read.
I start reading and 10 minutes later I'm doing something else, like I can't focus. I used to be able to focus very well - is this getting old or what?
Also, I can't seem to review the books I've read before. I have around 10 unfinished reviews I just can't get myself to finish - it's like I have nothing to say - and that would be a new one...

I've trying taking time out from my blog, but it's not really helping.
Now I'm going to start re-reading a book I really loved, to see if that does the trick. I'm just worried what's wrong...

Any tips? Any ideas?