What do you call someone who can't succeed?

It's not like this individual chooses not to succeed. This person never missed a day of school not elementary, middle or high school. This person barely gets pass no matter what he/she does. Now here is this individuals background. This person was severely physical abused by the father since the age of 5. Nothinges this person does is ever good enough for the father. He beats this person for absolutely nothing and deepen the abused by verbally abusing this individual . Saying things like "you are a piece of sh*t, and you will never amount to anything". This individual feels broken as an adult. Insecurity, self pity, low self esteem and other emotional trauma prevents this individual from moving forward. This person is literally broken. How can I help this person see how wonderful they are and how worthy they are?