Compassion is a feeling that includes understanding the emotional state of another person or oneself and the willingness to act to reduce negative emotional states. As such, it plays an essential role in the development of attachment in humans. Self-compassion represents a positive and non-critical attitude towards oneself and the acceptance of one's own experiences as universal. In the context of attachment theory as a theory that deals with the impact of early relationships on an individual, a compassionate relationship with others or with oneself can reconstruct the internal working models developed in the earliest age of life and influence the quality of attachment in adult life. At the same time, the quality of attachment is a prerequisite for the development of compassion in general. Numerous studies show that compassion for oneself and others has a significant impact on an individual's mental well-being, and as a mediating variable it indirectly affects satisfaction in intimate relationships, at the workplace and in the relationship with oneself. Based on the interrelationship of compassion and attachment, new interventions can change the quality of attachment through techniques of compassion towards oneself and others, and thus indirectly affect the mental and physical health and well-being of a person. The mentioned interventions aim to enable the individual to have unhindered personal development and the ability to fulfill their own potential. The ability of the human brain to change under the influence of new experiences provides the basis for the development of compassion as a skill that can be trained and then directed towards others, oneself or society in general. Further research into the relationship between compassion and attachment will enable even better human-adaptive interventions, and thus their effectiveness. The aim of this paper is to explain the relationship between the styles of attachment and compassion towards oneself and others through a review of the literature, and to investigate their influence on the individual's well-being.