Cannot Concentrate

I am back to work after a long holiday. Its been more than 2 weeks that I was away from office and its very difficult to start off just like that once I step into the office. Even though I haven't done much today, I am not at all in a mood to do any work which would need some thinking and analyzing to it. Morning 7.30 I came home and by 9 I was in office. My trip to India for my marriage was very very hectic and did not have a proper sleep there. I will have to take a small break and sleep like a dog.