Sometimes we learn these things too late 

The experience of ongoing trauma in childhood significantly increases the likelihood of developing dissociative disorders in adulthood (International Society for the Study of Dissociation, 2002; Kisiel & Lyons, 2001; Martinez-Taboas & Guillermo, 2000; Nash, Hulsey, Sexton, Harralson & Lambert, 1993; Siegel, 2003; Simeon et al., 2001; Simeon, Guralnik, & Schmeidler, 2001; Spiegel & Cardeña, 1991).