Lately, Maddi[1][2] has characterized hardiness as a combination of three attitudes (commitment, control, and challenge) that together provide the courage and motivation needed to turn stressful circumstances from potential calamities into opportunities for personal growth.
[1]Kobasa, S. C., Maddi, S. R. S. R. (2004). "Hardiness: An operationalization of existential courage". Journal of Humanistic Psychology. 44 (3): 279–298. doi:10.1177/0022167804266101
[2]Kobasa, S. C., Maddi, S. R. S. R.(2006). "Hardiness: The courage to grow from stresses". Journal of Positive Psychology. 1 (3): 160–168. doi:10.1080/17439760600619609