Mindfulness and forgiveness can contribute to decreased rumination, which in turn has been found to play an important role in sleep problems, such as insomnia and poor sleep quality. The authors explored rumination as a potential explanatory variable underlying the association of mindfulness with insomnia and sleep quality, with a model encompassing different mindfulness facets and controlling for interpersonal dispositional forgiveness. One hundred adults (74% females, Mage = 27.62, SD = 8.11) completed measures of Mindfulness, Forgivingness, Rumination, Sleep Quality, and Insomnia. Nonjudging was the main mindfulness facet contributing to better sleep quality. Rumination completely mediated the associations of nonjudgmental attitude with insomnia and sleep quality, and partially mediated the associations of dispositional forgiveness with the outcomes. These findings suggest that a mindful nonjudgmental attitude toward the self and a forgiving interpersonal disposition may reduce rumination by helping individuals let go of thoughts, mental images, and emotions, thus promoting better sleep.
Keywords: forgivingness; insomnia; mindfulness; rumination; sleep quality.