Attachment theory is an evolutionary concept based on the way individuals relate to one another in a relationship. The most important tenet is that young children need to develop a relationship with at least one primary caregiver for normal social and emotional development. How this child is parented and how that caregiver relates to the child sets the stage for how that child will show up in relationships later in life. We all have a personal attachment style. It is possible to change from one style to another through awareness and healing.