The D in DBT stands for dialectical. The definition of a dialect is two seemingly opposite truths that exist at the same time. A good example of a dialect is I love you and I hate you. The world is full of dialects and DBT encourages the acceptance of living in the dialectic.
The cornerstone of DBT is mindfulness. According to Linehan, without the practice of mindfulness it would be nearly impossible to recognize and describe emotions that are coming up when high stress situations occur. Being mindful can be done in many ways including mindful walking, mindful driving or mindful eating. These are daily activities that most people engage in and by practicing them mindfully will create more insight into feelings and experiences that are coming up in the body.