This article is by Chris Guillebeau, author of the $100 Startup. It’s a book I haven’t read but Mr Guillebeau recommends getting into a routine, which can help you preserve energy for things that matter most. Making decisions, even if you aren’t aware of them, saps your energy. It reminded me of a note from Thomas Sterner’s book, The Practicing Mind:
A large part of what makes us define something as work is that the activity requires a lot of decision making, which can be very stressful and fatiguing. This is especially true when the decisions that you are making are very subtle and you are not even aware that you are making them.