Originally published as Energâias y relaciones para crecer by Maria Mercâe Conangla and Jaume Solar, translated from Spanish by Ian Hayden Jones.
Maria Mercè Conangla and Jaume Soler are psychologists and creators of Fundació Àmbit (Institute for Personal Growth), Barcelona, a nonprofit organization that since 1996 has provided training in personal growth and emotional education. They teach at the University of Barcelona.