The ideas that you mention are discussed in the book, and fit in the procrastination equation. For example, when you chop up your main work into little chunks and reward yourself for each chunk, you are decreasing the delay factor of the equation, by decreasing the time it takes to get the first taste of a reward. You are also increasing the value factor, by adding additional rewards, and increasing the expectancy factor, but making the first baby steps seem more achievable.