failure of the environment that was perceived by the child as such at the time that the failure occurred… the going-on-living that belonged to taking for granted a good-enough environment became replaced by a reaction to environmental failure, and this reaction broke up the sense of going-on-living.
Winnicott defines deprivation as the rupture of a previously adequate environment perceived as failure by the child, which shatters the continuity of lived experience and constitutes the point of origin for the antisocial tendency.
, The Maturational Processes and the Facilitating Environment, 1965thesis