“…We included types of participants with the following problems/diagnosis: adjustment reaction (Henderson, 1983), lacking crucial self-esteem and self-concept (Haines, 1989), severe learning disabilities (Pavlicevic et al, 2014), problems due to fear, depression, and low self-esteem (Wu, 2002), low self-esteem and high academic stress (Sharma & Jagdev, 2012), adolescents who had been sexually abused in the past (Clendenon-Wallen, 1991), prisoners (Chen et al, 2016), severe mental illness (Grocke et al, 2014), depression of various degrees of severity and schizophrenia (Hanser & Thompson, 1994), an adult woman who had problems in finding her personal identity and suffered badly from grief, low self-esteem, and feelings of depression (Smeijsters & van den Hurk, 1999), patients diagnosed with cancer (Daykin et al, 2007), multiple sclerosis (Aldridge et al, 2005), and dissociative identity disorder (Gleadhill & Ferris, 2010). In summary, 5 trials included children up to 18 years old, and 6 concerned adults.…”