MASOCHISM

  
[Those who] were particularly humiliated as children…seek revenge through their sense of moral superiority, which requires repeated humiliation and mistreatment. If the world is treating us well we have no need to avenge ourselves on it. If seeking revenge is our goal in life, we will have to see to it that the world treats us badly in order to justify our goal. Masochists look on their submission to mistreatment as love, whereas in fact it is a necessity in their never-ceasing search for revenge and is basically motivated by hatred. 

-- M. Scott Peck, The Road Less Traveled

Masochism is a technique of control, first discovered in childhood following trauma, the onslaught of the unexpected. The child believes it can prevent further trauma by reenacting the original trauma. Then, as master of the script, he is no longer a victim; he can decide for himself when to suffer pain rather than having it strike without warning.

-- Robert Stoller, Sexual Excitement