If they are a necessary part of your goal. Your purpose for reading them is usually subgoal or one of the actions you think are necessary to reach your goal. It may not be necessary but if you think it is necessary, then it is.
You could use a Paraliminal to motivate yourself to find and use the helpful information of those books.
Successful people use numbers to determine when they are getting toward their goal. To have X representatives and Y customers bying $z worth of products are targets that major corportations use to keep their businesses on track and to measure how they are going. So yes you would be looking at how much you need to reach your goal.
Alex
