Existential self-realization can be described as a sudden realization, revelation, or reaffirmation of a person's existence within this universe. This typically feels like a sudden and profound "waking up" or "rebirth" that results in an intense sense of motivation, an added sense of purpose to one’s life, a sudden comprehension of their own situation, an appreciation for life, and a sense of urgency to make the most out of it while it lasts. During this state, no new knowledge is learned but the previously known information regarding their existence is reintegrated in a sudden and profound manner that results in a deep sense of appreciation for the unlikely circumstances of their own existence. The residual impacts of this effect often carry over into sobriety, potentially resulting in lasting positive benefits for the person. Existential self-realization is most commonly induced under the influence of moderate dosages of psychedelic and dissociatives compounds such as ketamine, LSD, 4-AcO-DMT, and DCK. However, it can also occur to a lesser extent after near-death experiences and under the influence of entacogens such as MDMA.