Steve Housham played down the importance of Gainsborough Trinity's derby defeat to Boston United after accusing his side of gifting their arch rivals three points.
The Blues' seven-match unbeaten run was curtailed by the Pilgrims' 2-1 victory at the Jakemans Stadium last weekend.
Goals from former Trinity duo Ian Ross and Marc Newsham secured the points for Jason Lee's side, either side of Shane Clarke's superbly headed equaliser.
The result saw Boston climb above Gainsborough in the Blue Square Bet North table, but Housham refused to be too downcast following the defeat.
The Blues boss is drawing inspiration from his side's run to the play-off final last season, which came after some poor form in November.
"This is only one game. This hasn't won Boston the play-off race or the league title and it's not lost us anything," said Housham.
"We've just lost some bragging rights over a game of football.
"Last season we got one point in the month of November and went on to reach the play-off final.
"Nothing is won or lost in November so it's not the end of the world.
"It's a hard one to swallow because it's against our local rivals and the bragging rights have gone to Boston for once.
"It's disappointing, but it's our first defeat in eight games so it's about how we pick ourselves up."
Trinity were poor in the first half and were fortunate to be all square at the break after Clarke headed home Jamie Yates' cross.
Housham admitted his side's display fell well below their recent high standards, but felt both sides were disappointing on the day.
"I thought it was poor from both teams," he added.
"It didn't really live up to a derby. We were lacklustre in the first half and we got punished by our own mistakes. We gifted them the game.
"We chucked everything at them at the end and we had one or two efforts cleared off the line.
"They had four chances all game and scored two from our mistakes."
Housham pointed the finger at centre-back Luke Waterfall for both of Boston's goals.
The highly-rated defender conceded the free-kick for Ross's goal and the penalty which Newsham converted.
"It was a definite penalty," conceded Housham. "It was clumsy from our centre-half.
"Luke Waterfall has been tremendous for us over the last couple of seasons, but he made two mistakes and it cost us the game.
"I thought he was at fault for the free-kick and then he gives the penalty away."
Housham and Trinity now turn their attention to Saturday's FA Trophy tie against Blue Square Bet North strugglers Hinckley.
Gainsborough's scorer against Boston, Clarke, is a doubt after being forced to come off at half-time at the Jakemans Stadium.
"He got a bad knock on his ankle," explained Housham.
"We'll assess him before the game to see how he is."
Hinckley (h), Saturday, November 10, FA Trophy