Researches, reflections and training practices of last decades have contributed to radically redefine the theory-practice of lifelong guidance, in the multiplicity of its places and experiences. In this sense, talking about guidance in the nowadays society of permanent change implies the need to highlight its complex and systemic nature, both in terms of theoretical legitimacy and in terms of concrete action. This is in order to better characterize identities, powers, functions and methods. Guidance - and people involved at both theoretical and practical levels – is supposed to "support" individuals in the continuous transitions they are asked to face in every age of life, transforming risk situations into personal growth and to private, professional and social opportunities.