check out Carol S. Dweck's book esp. Mindset

Can you please elaborate a bit more on what it is you're looking for in these fields?  Any particular topics? You might find Sonja Lyubomirsky's research on happiness interesting.

http://sonjalyubomirsky.com/papers-publications/

see Bannink, F. (2014). Handbook of positive supervision for supervisors, facilitators, and peer groups. Boston, Göttingen: Hogrefe. 

You can try International Journal of Wellbeing; http://www.internationaljournalofwellbeing.org/index.php/ijow  

Thank you very much! All helpful suggestions I will look into most of them.

Seligman is king in this area but also look at Karen  Reivich Carol Dweck . There's a bok called learning to ride elephants by Morris , all about applying positive psychology in schools. Google Geelong Grammar School, they are a positive education school applying PS principles s is Wellington College. Hope that helps

There are a few emerging research journals in coaching, and most of the field today is informed by positive psychology.  One such research journal is Coaching: An International Journal of Theory Research and Practice.  Much of the work in self-determination theory (Deci and Ryan), Motivational Interviewing (Rollnick & Miller; Pantalon) ,Transtheoretical model of stages of change (‎Prochaska & ‎DiClemente), solution focused therapy are both rooted in positive psychology and have informed the field of coaching.  You may also find good resources at the Institute of Coaching at Harvard Medical School.  The consulting and counseling journals are also good sources for positive psychology and coaching.  Much of tghe literature on coaching, is not, however, research based.  Many therapy models are being adapted and reframed as positive coaching, for example Cognitive Behavioral Therapy.  We intuitively know that these models work in practice but the question is do they work in theory?  What are the limits of generalizability?  How is positive psychology informing therapy and then adapted for coaching situations. 

Secondary sources are often a good source of leads, as well.  Here are some of the books that I've found helpful that have a strong research basis and are directly related to coaching. 

Biswas-Diener, R., & Dean, B. (2007). Positive psychology coaching: Putting the science of happiness to work for your clients. Hoboken, N.J: John Wiley & Sons.

Biswas-Diener, R. (2010). Practicing positive psychology coaching: Assessment, activities, and strategies for success. Hoboken, NJ: Wiley.

Orem, S., Binkert, J., & Clancy, A. L. (2007). Appreciative coaching: A positive process for change. San Francisco: Jossey-Bass/Wiley.

Linley, P. A., & Joseph, S. (2004). Positive psychology in practice. Hoboken, N.J: Wiley.

Linley, P. A., Harrington, S., & Garcea, N. (2010). Oxford handbook of positive psychology and work. Oxford: Oxford University Press.

Sheldon, K. M., Kashdan, T. B., & Steger, M. F. (2011). Designing positive psychology: Taking stock and moving forward. Oxford: Oxford University Press.

Stober, D. R., & Grant, A. (2006). Evidence based coaching handbook: Putting best practices to work for your clients. Hoboken, N.J: John Wiley & Sons.

Passmore, J. (2014). Mastery in coaching: A complete psychological toolkit for advanced coaching.

Korotov, K. (2012). Tricky coaching: Difficult cases in leadership coaching. Basingstoke: Palgrave Macmillan.

Linley, P. A., & Proctor, C. (2013). Research, applications, and interventions for children and adolescents: A positive psychology perspective. Dordrecht: Springer.

Grant, A. M. (January 01, 2003). The impact of life coaching on goal attainment, metacognition and mental health. Social Behavior and Personality, 31, 3, 253.

Ryan, Richard M. 2012. The Oxford handbook of human motivation. New York: Oxford University Press.

Grant, A. M., Passmore, J., Cavanagh, M. J., & Parker, H. M. (January 01, 2010). 4 The State of Play in Coaching Today: A Comprehensive Review of the Field. International Review of Industrial and Organizational Psychology, 25, 125.

Grant, A. M. (December 11, 2013). The Efficacy of Executive Coaching in Times of Organisational Change. Journal of Change Management, 14, 2, 258-280.

Cox, E., Bachkirova, T., & Clutterbuck, D. (2010). The complete handbook of coaching. Los Angeles, Calif: SAGE.

Kauffman, C. (September 01, 2010). The last word: how to move from good to great coaching by drawing on the full range of what you know. Coaching: an International Journal of Theory, Research and Practice, 3, 2, 87-98.

Bachkirova, T., & Kauffman, C. (September 01, 2008). Many ways of knowing: how to make sense of different research perspectives in studies of coaching. Coaching: an International Journal of Theory, Research and Practice, 1, 2, 107-113.

Best wishes.