purposes were

One Minute Manager: To develop leadership skills through learning about goal setting, praising, and reprimanding at work.

Think and Grow Rich: To learn the mind operating system of successful people so that I can implement them mself and also become financially successful.

Blink: To learn about the psychology of first impressions so that I better present myself when meeting new people or when going for interviews.

The Power of Your Subconscious Mind: To build a stronger connection between my conscious and other than conscious minds.

...I had a few more purposes cuz I did some of the chapters individually, but these were the general purposes that I used for each book.