Depression, anger, anxiety, sadness, loneliness and intramarital tension certainly do not help recovery. Strong religious belief and optimism reduced pain improving healing time. Learning relaxation techniques also helped, as did interaction with a psychiatrist.
Though the data points to affects on recovery times, strong correlations were not found. This is rather perplexing. Common sense would indicate improved outcomes with positive outlooks. For the present, medical practitioners will have to accept that the way one feels affects healing without relying too heavily on the findings.