The Gunners boss - whose side lost their previous two games since the restart of the Premier League campaign - beat Southampton on Thursday (26.06.20) and leaves them six points of sixth placed Wolves and Manchester United in fifth.
Although Champions League qualification seems unlikely, it's currently not known whether Manchester City - who sit in second place - will be playing in Europe during the next campaign after they appealed their ban for breaching financial fair play.
It could mean Arsenal can claim a Europa League spot, and Arteta said: "I am always positive.
"We have enough time, we have enough games left to do it.
"We had two defeats for the first time since I joined, but now we have won and it lifts the spirit, it lifts the belief.
"The calendar of the Premier League has given us is pretty tough. We have four away games and we have to recover the players now."