"In this period, we know how much we needed the wins," Arteta said.
"We had a really tough week and it wasn't that much about the performance, it was about the result.
"You need the results to start confidence and now with two wins, I think everyone is in a much better mood.
"The best medicine is winning - it's a different world and a different story. The picture looks much better at the moment. We need that more consistency and try to win again."
Arteta, in charge of Arsenal since December 2019, said he had suffered "in some moments" this year but had the support of the club:
"Considering the context we're in now, the pandemic and the problems we've had recently, it's been quite a challenge.
"I'm enjoying and suffering in some moments, but I have great people around me and a great organisation."