Self-actualization is a concept introduced by psychologist Abraham Maslow in the mid-20th century as part of his hierarchy of needs theory. It represents the realization of one's full potential and the desire for personal growth and fulfillment. In order to activate self-actualization and set a life purpose, it is essential to engage in introspection, cultivate self-awareness, and take intentional steps towards aligning your actions with your values and passions.