It is clear at the beginning of the film that Precious is undertandably disatisfied with her current situation, so we can see that the film will take us on a journey of self-discovery that will hopefully see this young character liberated to a healthier environment.
We can see throughout this film how the emotional and verbal abuse delivered so effectively by Precious' mother, Mary (Mo'Nique), can work towards the detriment of one's psyche. We see Precious' (perhaps forced) positive attitude at the beginning of the film transform into a form of self-loathing that is purely gut-wrenching. The audience witnesses a tearful Precious, with pencil in hand, break down when she is asked by her teacher, Ms. Rain (Paula Patton), to write in her journal about her seemingly crumbling life.
Patton, reminiscent of a young Whitney Houston in The Preacher's Wife, exudes such a sweet, yet determined demeanor with her students. Among her students, Ms. Rain pays special focus to Precious and her progress, both academically and emotionally.
In a climactic scene, in which Precious and her new born baby boy named Abdul return home, audience members sit back in their seats as they anticipate what Mary, portrayed here sitting calmly in a chair while smoking a cigarrette, will do to this "precious" new life. In the process of throwing a glass cup at the back of Precious' head, Mary drops baby Abdul carelessly on the floor. Precious, in a determined rage, physically overcomes her mother, takes her baby, and leaves for good.
After Precious begins to get her life on track, Mary agrees to sit down with Precious and a social worker, Mrs. Weiss (portrayed by Mariah Carrey in a surprisingly fulnerable role), to work out the future of their welfare. In this emotionally loaded scene, Mo'Nique shocks the audience with a brilliant portrayal of an emotionally broken mother, desperate to keep her daughter, but more importantly, her welfare checks. It is at this juncture in the film that we get to finally see into the character of Mary and why she hates Precious so much.
I was satisfied with the ending, as Precious not only freed herself of the environment that was bringing her down, but found a true appreciation for herself. This self-discovery, however, was something that was evidenced at the beginning of the film; she just lacked the tools to really apply these feelings to her own life--to allow herself to live her life out from under the thumb of her mother's condescention and abuse.