Lyubomirsky, Sonja <br/><br/>
The how of happiness  : a new approach to getting the life you want 

 - New York :  Penguin,  2008 
 - 384p. 
<br/><br/><label>ISBN: </label>9780143114956 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Self Motivation
<br/><br/><label>Dewey Class. No.: </label>158.1  / LYU