the book to make you enough money to justify the cost. Finally, ask yourself if you have time to actually read the book you have bought. You may see value in it and want to use it, but if you simply do not have time for it, then it should not be purchased. If you follow the two week rule and answer "yes" to all three questions, then you can feel confident in your purchases knowing that they will save you time, thereby making you more money as long as you use them enough to justify the cost and use the time saved to work on your business.