Rovers are without a league win in five matches after drawing 1-1 with their automatic promotion rivals at the Keepmoat Stadium.
But Flynn insists he saw enough from his players against the Glovers to suggest that the south Yorkshire side will soon break their winless streak.
"I think the revival has started with this," said Flynn. "We didn't start the game well but we showed a lot of character to drag ourselves back into it and I think we've turned a corner.
"We dominated the second half and should definitely have had a penalty. I think everyone in the ground thought it was a penalty apart from the referee.
"But we missed a couple of golden opportunities as well which we would normally have taken.
"Apart from that, I'm pleased with the performance individually and collectively against a really good team. If we maintain that standard we will be okay."
A blunder by Rovers goalkeeper Gary Woods gifted Yeovil the lead in the sixth minute when he fumbled a free-kick from Jamie McAllister and Paddy Madden popped up to slam home his 19th goal of the season - and his 11th in the last eight games.
Billy Paynter grabbed a deserved equaliser for Doncaster on the stroke of half-time.