Psychological resilience is the ability to mentally or emotionally cope with a crisis or to return to pre-crisis status quickly.[1] Resilience exists when the person uses "mental processes and behaviors in promoting personal assets and protecting self from the potential negative effects of stressors".[2] In simpler terms, psychological resilience exists in people who develop psychological and behavioral capabilities that allow them to remain calm during crises/chaos and to move on from the incident without long-term negative consequences.
Resilience definition: Definition of resilience. 1 : the capability of a strained body to recover its size and shape after deformation caused especially by compressive stress. 2 : an ability to recover from or adjust easily to misfortune or change.
Hope this helps ,atleast a bit.