Before Houston began its three-game series in Los Angeles -- which has been the toughest place for opposing teams to win this season -- Mills was asked whether winning on the road was the last thing a young team with talent has to learn.
"Is the road the last place? I can understand that question because that's kind of the way it looks right now," Mills said.
The Astros have been one of baseball's surprises early this season as they sit at 21-23 and in third place in the National League Central.
But they haven't been able to produce away from Minute Maid Park, going just 5-13 on the road this season.
Mills was quick to point out that the Astros haven't been getting blown out in those games. Eight of the 13 losses have been by only one run.
He said the close losses may be tough on his young players. But they'll have to learn to win those games away from Houston if they want to contend.
"You want to get to a point where some guys are able to be rewarded for their good play," Mills said. "We can come close in games, but you want to be able to get that hit, make that pitch, make that play."