The argument that 'indirect selection' is a contributory factor to health inequality has included ideas about personal characteristics that may originate in childhood and increase the likelihood of both poor health and disadvantaged social position in adulthood. The concept of protective resilience makes a similar but converse argument: that positive characteristics acquired at one phase of life may enable individuals to withstand later adversity. The increasing richness of data from longitudinal studies now allows us to examine these processes more closely over a longer period of life. In this paper we show that attachment style, a psychological characteristic thought to be associated with the style of parenting encountered during early childhood, may act as a source of resilience in the face of educational disadvantage. Men in mid-life who were not burdened with anxious or avoidant attachment styles seem to have been more likely to overcome the disadvantage of a lower level of educational attainment and progress up the ladder of Civil Service grades in the English Whitehall II study. As it is not strongly related to parents' social class, it can be argued that attachment style has acted as a source of upward social mobility which is also likely to reinforce better health in later life.