Are there any studies regarding elderly people and learning resiliance?
This isn't quite my area of expertise, but I did find a couple recent papers that attempted to use behavioral interventions to improve some measure of resilience in older populations and showed positive results:

Luskin, F., Reitz, M., Newell, K., Quinn, T. G., &amp; Haskell, W. (2002). A controlled pilot study of stress management training of elderly patients with congestive heart failure. Preventive cardiology, 5(4), 168-174.

Perez-Blasco, J., Sales, A., Meléndez, J. C., &amp; Mayordomo, T. (2016). The effects of mindfulness and self-compassion on improving the capacity to adapt to stress situations in elderly people living in the community. Clinical Gerontologist, 39(2), 90-103.

In addition to one showing an effect of a physical intervention, which makes sense since physical and mental/emotional outcomes tend to be highly correlated:

Roh, S. Y. (2016). Effect of a 16-week Pilates exercise program on the ego resiliency and depression in elderly women. Journal of exercise rehabilitation, 12(5), 494.



In summary, it seems like it's possible to improve psychological habits in older adults, though I didn't find anything comparing older to younger populations, and the vast amount of literature in this area seems to be focused on measuring and correlating measures of resiliency with other health outcomes, rather than improving it directly. Seems like an important area for future work.