You know that saying about assumptions….. You know… when you ASSume…. Well what actually is an assumption? And are they all bad? According to Webster’s Dictionary, an assumption is believing that something is true. When it comes to other people’s thoughts and motivations, believing truth in something you can’t prove might not be very helpful. But in Dialectic Behavioral Therapy (DBT), there are some assumptions that are helpful for everyone to consider as true. These assumptions apply to the therapist, the client, and the parents/caregivers and family. Whether you are working on changes for yourself, or you are a family member supporting someone who is struggling, consider these following nine assumptions.