Giroud has scored on each of his last four league games, but had a retched game against Monaco in the first leg.
Giroud has poor in the first leg, which left Arsenal an uphill battle after losing 3-1 at the Emirates Stadium, and Giroud was among those who had a terrible time of things having missed a couple of chances that he ought to have done better with, but has bounced back pretty well.
The Frenchman is quoted in the London Evening Standard, saying: "If you let the doubts enter your head it's even more difficult. You have to question yourself every week and bounce back. I try to show my answer on the pitch with my mentality. It was nice to do it against West Ham."
His form in front of goal has been pretty good of late having found the net on each of his last three league games since the first leg of the tie - though his form in the Premier League as a whole has been good, having scored 11 this season from 18 appearances.
He added: "Even when you play well and score a lot of goals, if you miss some everything is forgotten. You have to be aware. Don't believe the people who talk too much about football. I know when I play well or not I know how to bounce back. I used to say that football is an everlasting new beginning. We trust in our chance to go through."
With Arsenal needing to score at least three tomorrow night, they could do with the Olivier Giroud who has been finding the net fairly regularly in the Premier League, rather than the one that showed up against Monaco in the first leg.
He will no doubt have a point to prove, and if his confidence is high, he could be the man to lead a fightback against a very tight Monaco defence.