How strong is the evidence for Resilience?

Cochrane reviews of structured resilience-building programs for healthcare professionals and students, and a broader systematic review of resilience training programmes, find these interventions can improve resilience and reduce stress symptoms, though the underlying trials are often small and the certainty of evidence is graded low-to-moderate due to heterogeneity in program design. That evidence is currently rated moderate (55/100), built on 10 published studies, including 9 meta-analyses -- a reasonable base, but not yet enough for full certainty.