This article provides guidelines for optimizing organizational management styles and achieving a balance between life and work. Contributing to sustainable human development will contribute to the psychology of sustainability and sustainable development. The main purpose of the paper is to determine the relations between the preferences of management styles, working styles and lifestyles, and exposure to stress in the managerial population in order to achieve harmonization. A correlation study was conducted on a sample of 618 subjects using the Blanchard test of situational leadership, the Four-Dimensional Symptom Questionnaire for determining the stress levels, the modified Allport–Vernon–Lindsay Scale of Values, and Julie Hay’s Working Styles Questionnaire. The paper provides insight into the contribution of management styles to the balance of private and professional areas of life, as well as to stress reduction in managers.