What caused my parents to see me in that way?

What did I do or not do that caused my parents to criticize me all the time, to ignore my needs, to treat me like a burden, to abuse me? What about me caused them to react in that way?

My T is constantly insisting that my self-loathing view of myself comes from their view of me, and that she doesn't see me the way they saw me or the way I see myself. But what did I do to deserve to be treated so badly by them? What did I do or say or not do? Why was I treated this way? Why were they embarrassed by me, why were they worn out by my needs? What's wrong with me that the people who knew me the best disliked me and treated me badly?