The "one game at a time" mentality is fantasy at best.
There's no way for players (or fans) to compartmentalize the atrocious start to the 2013 season, and then start a new day pretending none of that happened. Winning feels good so the opposite would have to feel bad, and it does. I don't think it's helpful to whitewash their failures because you're deceiving yourself if you do.
As awful as this is, the Angels won't be this bad forever. They might turn things around next week, next month, or it might take five years. Who knows.