I think you are off to a good start here, with a statement that tells the reader what you are going to establish in your paper. What you need to now is add to the assertion with a preview of your means of support. How do you support your thesis? Can you "list" the ways you do so? A thesis statement needs a "because" part to it, which acts as an outline for you and for the reader.
Let me give you an example. Suppose I were writing a paper on The Kite Runner, a book you may have read. My thesis might be that Amir's redemption is a journey of steps, the healing of his relationship with his father, his courage in courting Soraya, his decision to return to Afghanistan, his facing his nemesis, Assef, and his returning with Sohrab. So, now I have told my reader that Amir redeems himself, but I also have a kind of "because" section, letting the reader know I am going to support my thesis by showing how each of these steps leads to his redemption. To structure my body paragraphs for this analysis, I will write a paragraph on each of those points, and then I will add a conclusion as a separate paragraph.
So, what are the points you make to show how Brother tries to fix the "irreparable hole"? Can each point be summarized in a word or a phrase? Those are the words or phrases that need to be part of your thesis statement.