This article proposes to think the vitalizing function of the analyst predominantly from D. W. Winnicott’s thoughts and some of his commentators’. To do that, we intended, initially, to respond metapsychologicaly to issues concerning vitality and devitalization departing from Rahel Boraks’ thoughts. We then turned into the vitalizing function of the mother, considering such function paradigmatic to define the vitalizing dimension present in the analytic setting. We introduce the vitalizing function of the mother within a paradoxical thought: the infant being simultaneously fragile and strong, bearer of what Winnicott calls “vital spark”. Nevertheless, the inherited potentials can only mature in the dependence of a facilitating environment. In a similar manner, the analyst should go towards the patient’s “vital spark” through his or her live, sensitive presence, and by offering what Lejarraga calls “analytic love”, which is defined from a non-sentimental perspective; but, similarly to the “maternal love”, it withholds fundamental importance for promoting vitalization. Lastly, we narrate a therapeutic session with a teenager, presented in the form of a (fictional) letter in which the analyst addresses the matching and mismatching experienced by the pair.