Celtic have closed the gap at the top of the Scottish Premiership table to just one point, after beating Hamilton at the weekend.
The Bhoys performances in the Scottish Premiership seemed to be negatively impacted on by their Europa League commitments last term.
However, this time around, Celtic have won every domestic match they have played after having a European game in midweek.
And Deila said to the Daily Record: “I’m happy that we won and after four games in Europe we have now come back and won 12 points out of 12 in the league.
“Last year we came back from European games and struggled but not this time.
“That’s very strong play. We are learning and we can go into the international break with a lot of confidence.
“We have two-and-a-half days between games so it’s a very good performance to have seven wins, two draws and one defeat. That’s better than last season and we will now push on.”
Celtic's latest win came against Hamilton at the weekend, after they had picked up a point against Fenerbahce in midweek.
The Bhoys beat Hamilton 2-1 with Dedryck Boyata and Leigh Griffiths scoring the goals which ensured Deila's side got the three points.
Celtic have now closed the gap at the top of the league to just one point, and they are breathing down Aberdeen's necks as they enter the international break.
The Bhoys now have a well earned rest, before they return to action in two weeks' time, with a fixture against Motherwell.