Here is another interesting post I found tonight on Lifehacker. This one approaches scheduling time for nothing but thinking.
Source: Why Your Schedule Should Have a Weekly Appointment Dedicated to “Thinking Time”.
Found this article today on Lifehacker. It really make sense. Everyone should read it.
Source: Take Vacations When You’re in the Middle of a Project, Not When You’re Finished.
Edit:
Also check out this one – The Trick to Accomplishing More by Doing Less: Take Breaks
It talks about how things that take longer than 90 minutes with no breaks are less productive due to blood glucose levels.
This is a great talk on motivation and creativity. The presented results are quite surprising and not what you’d typically expect.
Source: Daniel Pink on the surprising science of motivation – YouTube.