Black and white, all or nothing, good or bad, right or wrong, these may be references you understand better than the term dichotomous thinking. Dichotomy is defined as a division into two mutually exclusive, opposed, or contradictory groups, so you can see how those initial descriptions apply. This type of thinking can get in the way of healthy relationships, and certainly can create a lot of negative self talk and self judgment. This short snippet will give an introduction to these thought patterns and I'm sure will be brought up in future discussions.