Truro City launched a second half comeback to win 3-1 at Southern Premier League strugglers Arlesey Town.
Steve Tully's side trailed at the interval but goals from Matt Wright, Ed Palmer and sub Cody Cooke turned the game around.
"We were terrible against the wind and there were a few home truths told at half time," Tully told BBC Cornwall.
"I think the players went through the motions in the first half and they needed to be told."
City's 2-1 win over leaders Corby Town last week ensured they cannot finish any lower than third place and secured them a home play-off semi-final.
The Cornish side have now won 14 of their last 19 league games and are in the middle of a nine game unbeaten run.
"Wayne (Carlisle) stood behind the goal for the second half because we were that unhappy with the first half performance," Tully added.
"I've built a team here that never know when to give up and as soon as we got the goal to equalise there was only one team that was going to go and win it."
Truro will finish third and take on either Corby or Poole in their first play-off match once they have played their final league game at Histon.
"We've done it the hard way all season and I don't think it'll be any different in the play-offs."