Psychological boundaries of personality in relation to consumer behaviour changes in crisis situations have not been sufficiently studied. The study considered in this article consisted of 2 stages: in-depth interviews (10 people) and a survey using the author’s methodology for consumer behaviour changes and the Boundaries Questionnaire of E. Hartmann (123 people). As a result, two types of consumer behaviour changes were found: rational and impulsive. For people with an impulsive type of change in consumer behavior, psychological boundaries are thinner compared to people who have not experienced such changes. A separate study on a male sample also confirmed these findings - in men with an impulsive type of change, thin boundaries are more pronounced.