Inclusion Criteria:  All participants were volunteers. To be eligible for the study, each participant had to fulfill the following criteria:  at least 18 years old; (ii) fluent in Swedish have access to a computer or handheld device with internet access currently be employed >14 points on the Perceived Stress Scale <5 points on the Shirom Melamed Burnout Questionnaire (SMBQ) <20 points on the Montgomery Åsberg Depression Rating Scale-Self-Rated (MADRS-S) <21 points on the Insomnia Severity Index (ISI) <14 points on the Alcohol Use Disorders Identification Test (AUDIT).  Exclusion Criteria:  Participants were excluded from the study if they:  currently were in treatment for stress or burnout; currently were suffering from bipolar disorder, psychosis, post-traumatic stress disorder (PTSD), eating disorders, substance abuse, severe forms of depression, anxiety disorder or personality disorders as assessed in a telephone interview (MINI) suicidal ideation based on Item 9 on the MADRS-S. If on medication (e.g., antidepressants or sleep medication) this should be held constant medication constant during the study period.