Normally, I tell myself that I work best in the mornings. However, at this time I merely look at my stats, reply to emails, check my blogs and other sites that I subscribe to and browse the forums. As Rich Schrefen would say – writer of the Internet Business Manifesto – an entrepreneur should always be focusing on efficiency and productivity. Being productive can mean doing tasks that involve labour whether strenuous or not, but by being super-productive, you can produce systems, that will enable you in future projects to stream-line your work process.
So, to get back to the question, at what time can you concentrate the best?