Defender Joe Skarz hailed the spirit in the Rotherham United camp as the club prepare to return to Championship action.
The Millers are at AFC Bournemouth on Saturday after the two-week internatiuonal break.
Skarz said: “The mood is positive, definitely. It’s really positive.
“We’ve got a really good bunch of lads here. Nobody trains as hard as we do and nobody tries to improve as much as the lads at this club.”
The promoted Millers have six points from five matches in their first season in the second tier for nine years, beating Wolves and Millwall but losing to Derby, Watford and Brentford.
Left-back Skarz added: “We’ve played a lot of really good teams. Watford have score goals for fun since we played them and I think we should have beat them. Wolves have had good results and we did beat them.
“With this league, it’s a bit relentess. If the opposing team get a chance, often they put it in. We’ve got six points from five games. We’d have liked nine after Brentford, and that would have been a really good start.
“It’s so tight. Every team is fighting for points at the start of the season. It’s a relentless league and there’s so much quality in it.”
The 25-year-old has been a consistent performer in a Millers defence which has acquitted itself well at a higher level.
He said: “I’ve been pretty pleased with the way I’ve been playing. There’s always room for improvement. I always go home and analyse my performance and know things I could have done better.”
Midfielder Paul Green has declared himself fit and “raring to go” for the match at Bournemouth after recovering from a foot injury.
Centre-half Kari Arnason continued his fine start to the season with a commadning performance in Iceland’s 3-0 home win over Turkey in a European Championship 2016 qualifier on Tuesday night.