Psychological resilience refers to an individual's capacity to withstand stressors and not manifest psychology dysfunction, such as mental illness or persistent negative mood.  This is the mainstream psychological view of resilience, that is, resilience is defined in terms a person's capacity to avoid psychopathology despite difficult circumstances. 

Psychological stressors or "risk factors" are often considered to be experiences of major acute or chronic stress...

The central process involved in building resilience is the training and development of adaptive coping skills.

In humanistic psychology, resilience refers to an individual's capacity to thrive and fulfill potential despite or perhaps even because of such stressors.  Resilient individuals and communities are more inclined to see problems as opportunities for growth. 

it should be recognized that resilience is a dynamic quality, not a permanent capacity.  In other words, resilient individuals demonstrate dynamic self-renewal, whereas less resilient individuals find themselves worn down and negatively impacted by life stressors.