Introduction: Procrastination is a ubiquitous, multifaceted and problematic phenomenon. This paper will address the best scientific understanding published on this subject, although it is limited and of poor quality. Method: For this original revision study, we have examined various relevant bibliometric databases in a non-systematic way and with no claim to being comprehensive. The methodology used in much of the research consulted is quite deficient. Our objective has been to provide synthetic results from primary sources and have therefore avoided the most speculative ones. Results: With regard to the neuropsychopathological clinical features of procrastination, internalizing this behaviour is related to neuroticism, and externalizing it is linked to impulsivity. Procrastination increases with negative affectivity, and it often occurs in certain mental disorders, where it tends to constitute a permanent behaviour. Few studies have researched the neural correlations of procrastination. It can be can be voluntary and also an indirect consequence of perfectionist traits of personality, among others. In general, improving one's ability to regulate emotions might be very effective in reducing procrastinating behaviour. In relation to bedtime, its continued postponement seems to also be tied to personality traits. Conclusions: The author proposes the hypothesis that any specific intervention, whether medical or not, that improves awareness of one's own passive tendency to procrastinate will favour its reduction. However, if the intention is to influence somebody's mental health specifically, then the intervention should be conducted exclusively or preferably by properly qualified physicians.