Don't Skip Out On Me by Willy Vlautin

Horace is a young half indian with lofty dreams of becoming a championship boxer. His foster parents live on a ranch and have taken care of Horace since he was twelve. They treat him like a son and have shown him a good life knowing that to have him follow his dreams he must leave them. Horace becomes Hector and leaves for Tucson to train as a professional boxer all the while knowing that the Reeses support whatever he does and will take him back in with open arms. Horace is the most open, kind and generous guy - he is honorable in an unjust world and takes every punch that life throws at him with silent dignity. He is also harder on himself than any punch from the ring. Mr. and Mrs. Reese will do anything to help him sparing him the knowledge that they need his help to run the ranch now that they are unable to.
The author delivers a one/two punch that hits you in the heart and gut - a knockout of a story of family and unreachable dreams that should not be missed.