Positive Psychology has roots in various cultural, spiritual and religious traditions.  What aspect of this is most meaningful to you?  For example, you may find that PPs focus on character strengths and virtues mirrors aspects of your own religious tradition, or your own personal values (or ideals). 

writing require:  focus on the character strengths and personal values and ideals.  writing must be no reference no source using your own language,  also im not a good English speaker so must be using the easy and simple English word