One day at a time Relying on others part of paraplegic's daily struggle By JOHN DAVIS AVALANCHE-JOURNAL His world has shrunken from the oil fields of West Texas and Eastern New Mexico, to the size of the two-bedroom house in which he lives. Nearly a year after a car accident rendered 25-year-old Robert Armstrong paralyzed, he said his perspective and goals have changed greatly. Once content to do dangerous work as a roughneck in the oil business, now his main goal is to get out of his electric wheelchair — maybe even walk — one day. Even if the bills...