Complex work environments, such as the context in which health professionals operate, include an articulation of knowledge and skills, and it is true that a strong demand for the construction of emotional skills also implies a greater use of knowledge. It means that, in addition to the need for each professional to have technical knowledge in specialised domains, they also need to bring together a set of essential personal and interpersonal skills. In this sense, emotional competencies are positively associated with a set of personal characteristics that promote the use of good professional practices and serve as a protective factor for the well-being of individuals. This research aims to study the impact of a psychoeducational and training intervention on the development of emotional competencies of health care professionals working in a coronary care unit. The choice of this type of care unit is justified by the priority and permanent dimension of intervention in the health area required by chronic heart disease. To answer this objective, a mixed-methods research methodology was used. Data were collected from six health professionals, using the focus group method and questionnaires validated for the sample population. The combined analysis of qualitative and quantitative data allowed for a better understanding of reality and a more rigorous analysis of the intervention with health professionals. The participants' speeches revealed that the psychoeducational and formative intervention allowed for the introspection and reflection of feelings regarding the procedures implemented by these professionals for cardiac patients in a period of pandemic caused by SARS-COV2. The continuity of training actions for the mastery of emotional skills is highlighted by all professionals, allowing a more effective confrontation of a complex reality.