For my understanding please provide a 2000 word research proposal, which includes a thorough literature review, a thesis and a proposal for an experimental, quasi-experimental, or longitudinal study using these links Conkova, N., Lindenberg, J., Ose, S. O., & Machleidt, W. (2011). Mental health and the adult life course: An innovative approach to understanding mid-life change. Frontiers in Psychology, 2, 280. Link

Virtanen, M., Kawachi, I., Oksanen, T., Salo, P., Tuisku, K., Pulkki-Rback, L., ... & Kivimki, M. (2013). Socio-economic differences in long-term psychiatric work disability: a prospective cohort study of onset, recovery and recurrence. Occupational and Environmental Medicine, 70(5), 284-291. Link

Roelfs, D. J., Shor, E., Davidson, K. W., & Schwartz, J. E. (2011). Losing life and livelihood: a systematic review and meta-analysis of unemployment and all-cause mortality. Social Science & Medicine, 72(6), 840-854. Link

Boehm, J. K., Peterson, C., Kivimaki, M., & Kubzansky, L. D. (2011). A prospective study of positive psychological well-being and coronary heart disease. Health Psychology, 30(3), 259. Link

https://rgs-ibg.onlinelibrary.wiley.com/doi/abs/10.1111/tran.12246

https://academic.oup.com/eurpub/article/24/3/440/477204