These are the keys to the successful pair programming session:

The last chapter in the Essentialism book (by Greg McKeown) is about focusing.

It is interesting not only if you think about being programmer, but in every field of our life in general.

I've recently read this book and have changed my mind about the way i should follow in my life.
It is not worth to be super productive and give 100% of my life to take every chance i will have on my way.