Afterward the successful on reception of the book “Psychological Aspects in Times of Pandemic” where a number of issues from the perspective of psychological science are addressed, related to the impact of the appearance COVID-19 on the lives of citizens, and afore readers insistent request for a text focused on healthcare personnel, from there came this book. The purpose of it is to offer updated information on the psychological aspects of whom have been described as the battlefront against the advance of COVID-19 from a perspective of scientific psychology, for which reference will be made to the latest publications in this regard. A rigorous and up-to-date vision on the contributions of the science of psychology told in a way accessible to everyone, with the aim of helping to understand the emotional impact of this situation on health personnel, as well as the present and future consequences of the same.