I'm Ok - You're Ok Paperback – January 1, 1973 by Thomas A. Harris 
 
One of the most extraordinary self-help bestsellers of all time--with over 15 million copies in print--featuring Transactional Analysis. Harris has helped millions find the freedom to change, liberate their adult effectiveness, and achieve joyful intimacy with others. "A way to self-understanding and change."--Los Angeles Times.
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