The midfielder was outstanding for victory over Aston Villa.
Arteta said: “That should be a habit and he should demand that in his game, because he's capable of doing it.
“I'm really pleased that he's now developing that. But he still needs to develop more in other areas.
“The other night against Crystal Palace he wasn't 100 per cent fit but he made a step forward and wanted to play with a difficult injury that he had.
“He wasn't complaining - he was just looking forward.
“Emile's changed the way that he's living a little bit as well and some habits that he had.
“When you want to take your game to the next level, when you become a really important player in such a big club, that should become the only priority and every detail is important and relevant.
“You have to make them aware of that - you cannot give percentages away that can make big differences.
“He's changed that and credit to him and the staff here that are monitoring and trying to build that education with him. It will get only better."
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