www.StickK.com  A website that lets you set goals, the incentives/punishments you will offer yourself, and a referee and supporters to help you keep on track.
Carter, T., & Gilovich, T. (2010). The relative relativity of material and experiential purchases. Journal of Personality and Social Psychology, 98(1), 1193.
Clark, A., Oswald, A. (1994). Unhappiness and unemployment. Economic Journal, 104(424), 648.
Deaton, A. (2008). Income, health, and well-being around the world: Evidence from the Gallup world poll. Journal of Economic Perspectives, 22(2), 53.
Diener, E., & Seligman, M. (2004). Beyond money: Toward an economy of well-being. Psychological Science in the Public Interest, 5(1), 2.
Diener, E., Diener, R. (2002). Will money increase subjective well-being? Social Indicators Research, 57/2.
Dunn, E. W., Aknin, L. B., & Norton, M. I. (2008). Spending money on others promotes happiness. Science, 319(5870), 1687-1688.
Ekins, P., Max-Neef, M. (1997). Development and human needs. In Real-life economics: Understanding wealth creation. London and NY: Routledge.
Esterlin, R. (1995). Will raising the incomes of all increase the happiness of all? Journal of Economic Behavior and Organization, 27, 35.
Frank, R. (2005). Does money buy happiness? In Huppert, F., Baylis, N., and Keverne, B. (Eds). The science of wellbeing . New York: Oxford University Press.
Frey, B., Stutzer, A. (2002). Happiness & economics. Princeton, NJ: Princeton University Press.
Howell, R., & Howell, C. (2008). The relation of economic status to subjective well-being in developing countries: A meta-analysis. Psychological Bulletin, 134, 536.
Kasser , T. et al (2004). Materialistic values: their causes and consequences. In T. Kasser and A. Kanner (eds). Psychology and consumer culture: the struggle for a good life in a materialistic world. Washington, DC: American Psychological Association. .
Quoidbach, J., Dunn, E. W., Petrides, K. V., & Mikolajczak, M. (2010). Money giveth, money taketh away. Psychological Science, 21(6), 759-763.
Rath, T., Harter, J. (2010). Wellbeing: The five essential elements. New York: Gallup Press.
Stevenson, B., Wolfers, J. (2013). Subjective well-being and income: Is there any evidence of satiation? American Economic Review, 103(3): 598-604.
Tay, L., & Diener, E. (2011). Needs and subjective well-being around the world. Journal of Personality and Social Psychology, 101(2), 354.
Thaler, R., Sunstein, C. (2009). Nudge. New York: Penguin Books.
Vanderkam, L. (2013). Why money isn't buying you happiness. Moneywatch. May 28, 2013. Accessed July 11, 2013 at http://www.cbsnews.com/8301-500395_162-57586398/why-money-isnt-buying-yo... 
Vohs, K., Mead, N., & Goode, M. (2006). The psychological consequences of money. Science, 314(5802), 1154.