The principles of behavioral cause and effect form the foundation for ethical living and spiritual development in Buddhism. Constructive actions inevitably bring happiness, while destructive actions lead to suffering, and even the smallest deeds can produce immense future consequences. Karma functions not as fate imposed by an external power, but as the natural unfolding of compelling impulses, intentions and behavior accumulated on the mental continuum. Intentions and motivations play a crucial role, since actions influenced by attachment, hostility and closed-mindedness create the causes for future problems and dissatisfaction. Ethical self-discipline therefore becomes essential for shaping future experiences and avoiding suffering. The ten destructive actions of body, speech and mind illustrate how harmful patterns of conduct damage both oneself and others, while refraining from them creates the basis for well-being and spiritual growth. Confidence in the principles of karma develops through reflection, reasoning and trust in the insights of enlightened beings who understand the deeper workings of reality.