Pratt, George. <br/><br/>
Code to joy : the four-step solution to unlocking your natural state of happiness / 
George Pratt, Peter Lambrou and John David Mann 
 - New York  Harper Collins  2012 
 - 248 p. 
<br/><br/><label>ISBN: </label>9780062059413 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Self-actualization(psychology)<br/>Positive psychologyﾠ<br/>Joyﾠ<br/>Happinessﾠ
<br/><br/><label>Dewey Class. No.: </label>158.1 PRA-G