1. Hassani RA, Ahmad MR, Mir Derikvand R. The relationship between optimism Islamic Seligman learned optimism and of spirituality. J Psychol Religion. 2011; 16: 102- 145.
2. Fayyaz bakhsh A, Tavakoli MR, Hossein- Zadeh, S, Abasi Moghaddam MA. The relationship between public samet and burnout among office workers, financial tehran university of medical sciences hospitals. J Payavard Health. 2016; 10 (6): 488- 495.
3. Farhadi A, Movahedi Y, Movahedi M. The relationship between happiness, health and time horizons (Expectationism) and academic performance. Lorestan Med Culture Islamic Univ J. 2013; 7: 297- 314.
4. Dolaty A. Principles of happiness and happiness. Peyvand J. 2011; 3: 21- 24.
5. Rahimian Boogar I. The predictive role of happiness, optimism and demographic situation in the health- related behaviors, J Knowledge Health. 2013; 8 (1): 17- 22.
6. Neshatdoust HT, Kalantari M, Mehrabi HA, Palahang H, Nouri NS, Soltani I. The contribution of factors affecting happiness in students. J Thoughts Behav Clin Psychol. 2012; 24: 69- 78.
7. Langari M, Soleimanpouromran M, Esmaili Shad B. Examine the relationship between job involvement and organizational citizenship behavior bojnoord university of medical sciences. J Health Management. 2016; 7 (2): 91- 102.
8. Fardinejad Z, Ahadi H. The relationship of general health and perceived social support and life satisfaction among the elderly. J Behav Sci. 2013; 5 (15): 87- 100.
9. Issazadegan A, Michaeli Manee F, Marvi Milan F. The relationship between hope, optimism and sense of pre-university education with academic performance of students. J School Psychol. 2014; 3 (2): 137- 152.
10. Aghaie A, Raisi Dehkordi R, Atashpour H. The relationship between optimism and public health. J Knowledge Res Psychol. 2007; 33: 17- 30.
11. Banihashemian K, Seif MH, Moazzen M. The relationship between optimism, pessimism, general health and emotional intelligence Shiraz University. Babol Univ Med Sci J. 2009; 1: 49- 56.
12. Kronsttrom T, Karlsso H, Nabi S, Oksanen T, Salo P. Optimism and pessimism a predictor of work disability a diagnosis of CD: aprospective cohort study of onset and recovery. J Affective Disorder. 2011; 30 (2): 269- 299.
13. Brissette I, Scheier MF, Carver CS. The role of optimism in social network development, coping, and psychological adjustment during a life transition. J Person Social Psychol. 2002; 82: 102- 111.
14. Perneger TV, Hudelson PM, Bovier PA. Health and happiness in young Swiss adults. J Qual Life Res. 2004; 13 (1): 171- 178.
15. Veenhoven R. Correlates of happiness. Rotterdam. 1994.
16. Okun MA, Stock WA, Haring MJ, Witten RA. Health and subjective well- being: a meta- analysis. Inter J Aging Human Develop. 1984; 19: 111- 132.
17. Kareshki H, Pakmehr H. Relationship between perceived self- efficacy, meta-cognitive, and critical thinking with mental health among medical sciences students. J Hakim Res. 2011; 14 (3): 180- 187.
18. Mousavi Nasab MH, Taghavi MR. Optimism- pessimism and coping strategies: prediction of psychological adjustment in adolescents. IJPCP. 2007; 12 (4): 380- 389.
19. Hills P, Argyle M, Reeves R. Individual differences in leisure satisfactions: an investigation of four theories of leisure motivation. J Person Indiv Diff. 2001; 28: 763- 779.
20. Ryff C D. Happiness is everything, or is it? explorations on the meaning of Psychological well- being. J of Person Social Psychol.1989; 57: 1069- 1081.
21. Wickrama K, Conger RD, Lorenz FO, Matthews L. Role identity, role satisfaction, and perceived physical health. J Social Psychol. 1995; 58: 270- 283.
22. Asgari P, Roushani K, Mehri Adaryani M. The relationship between religious belief optimism and spiritual well- being among college students of islamic azad university. J New Findings Psychol. 2009; 4 (10): 27- 39.
23. Zare H. The effect of cognitive training to improve student achievement motivation PNU hope and optimism. J Res Learn Virtual School. 2016; 4 (13): 93- 85.
24. Key Khosrovani E, Dehghani A. Investigate the relationship between optimism, resilience, intelligence and Public health undergraduate students. J Life Magazine. 2012; 9 (1): 70- 76.
25. Seligman MA, Csikszent MH. Positive psychology. Am Psychol. 2000; 55 (1): 5- 14.
26. Omidian M. The study of general health and happiness in university students. Yazd J Psycho Edu Studies. 2009; 35: 101- 116.
27. Tahmasbyan M. The relationship between optimism and mental health of students. Child and Adolescent Conference Psychology. 2011.
28. W- Green B, Medlin B, Whitten D. Developing optimism to improve performance: an approach for the manufacturing sector Industrial. J Manag Data Systems. 2004; 104 (2): 106- 114.
29. Starcevic V, Berle D, Milicevic D, Hannan A, Lamplugh C, Eslick GD. Pathological worry, anxiety disorders and the impact of co- occurrence with depressive and other anxiety disorders. J Anxiety Disorders. 2010; 21: 1016- 1027.
30. Pentti J, Kivimäki M, Vahtera J. Optimism and pessimism as predictors of work disability with a diagnosis of depression: a prospective cohort study of onset and recovery. J Affect Disord. 2011; 130 (1-2): 294- 299.