Psychologists believes there is a mental state called flow, which is a state of deep concentration. Within the flow, you will increase your productivity and more inspirations, however you usually need around 15 minutes on uninterrupted work to get into the flow state. Over at 43folders.com and C2.com, they has some good information on the Flow mental state. How do you get the flow at work? Read into it and you may find some tips.