This is great advice, and OP, if you think this would be a waste of time, it is not. Our brains get stimulated on new patterns. By doing something totally non-

This is great advice, and OP, if you think this would be a waste of time, it is not. Our brains get stimulated on new patterns. By doing something totally non-computer related higher level concepts will stimulate the higher regions of your brain and give you new perspectives and insights. These perspectives and insights will both work as a source of energy and motivation while you're coding, and the higher level patterns you learn doing a totally different task will help you "think outside the box" when writing software. Go out there and stimulate that higher neocortex with some fresh patterns!