I sat down to write our monthly newsletter a few days ago, and as I was doing so I began to think about the topic of concentration. Why is it so easy to focus on some occasions, while at other times it seems to require a huge mental effort? As I was starting to put words on the paper, my cell phone rang as a client called me to make an appointment. While I was talking to her, one of my friends sent me a message on Skype which I started typing a response to, then I switched to