A common sentiment in Scientology is the idea that, "You pulled it in." What this statement, in all it's infinite simplicity, means is that everything that happens to you in your life is your fault. If you get sick, contract cancer, are born mentally challenged or are mentally ill it is said to be your fault.
Scientologists lack compassion for anyone who suffers in this life. Any suffering is automatically deemed to be the fault of the individual, regardless of circumstance. They believe that you made a choice when you were born, to which family you would be born and that the state of your body at birth depends entirely upon the deeds which you committed during your previous life.