Z.B. Hill <br/><br/>
Happiness 

<br/><br/> A look at the causes and effects of happiness describes the chemicals in the brain associated with pleasure; the role of genes, circumstances, and life choices in shaping happiness; and the importance of focusing on positive emotions. 
<br/><br/><label>ISBN: </label>9781422230749 
<br/><br/><label>Dewey Class. No.: </label>152.4 HIL