Bellerin is not the only one who is happy under Arsenal new head coach.
Mesut Ozil and Alexandre Lacazette back Mikel Arteta's tactics to take Arsenal forward.
Arteta took over from interim head coach Freddie Ljungberg in December and Arsenal are tenth in the Premier League after his first seven games in charge.
While the results have not improved significantly, Ozil and Lacazette feel the team has united under Arteta's tactical philosophy.
Ozil, talking at Arsenal's Dubai warm-weather training camp, said: "As a team, we are much happier and everyone wants to give everything for this club.
Lacazette, who has not scored since Arteta took charge, echoed Ozil's view on the coach and team morale.
"We are more together now. The way we think as well on the pitch and outside the pitch. Tactically we are better and we're going to see a big improvement in the next few weeks."
Hector Bellerin agreed about the changes being made by the former Arsenal captain since taking charge.
"It's very early doors in time. [Mikel] has a new philosophy and the way he has implemented it in the last few games that we've played, there's been a big change," he told the club's website.