The aim of this single-subject study was to report experiences from one and a half years of regular floating as described by a person with neuropsychiatric and mental health disorders. Floating, or Flotation Restricted Environmental Stimulation Technique, involves relaxation and sensory deprivation by means of resting in a tank with highly salted and body-tempered water. The subject, a 24-year-old woman diagnosed with attention deficit hyperactivity disorder, atypical autism, post-traumatic stress disorder, anxiety and depression floated regularly for one and a half years. Interviews regarding her experiences were analyzed and the main findings involved a subjective sense of improved quality of life, wellbeing and healthy behavior. There were no negative effects from treatment. Results suggest that floating may have beneficial therapeutic effects on mental health. Further studies that evaluate the efficacy and possible effects of floating with regard to mental health are needed.