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2. Appreciation: Individual differences in finding value and meaning as a unique predictor of subjective well-being;Adler;Journal of Personality,2005
3. Beyond reciprocity: Gratitude and relationships in everyday life;Algoe;Emotion,2008
4. Lottery winners and accident victims: Is happiness relative?;Brickman;Journal of Personality and Social Psychology,1978
5. The benefits of being present: Mindfulness and its role in psychological well-being;Brown;Journal of Personality and Social Psychology,2003