"It's been a few months now but obviously it's a moment I'll always savour and think back and enjoy," Kennedy said of his crucial goal against Iraq back in June.
"But I think the real work is starting now and we've got the World Cup to prepare for.
"We're not going to just relax now and be there for the ride, we want to go there and achieve something and do the best we can."
Kennedy was one of the late arrivals into camp on Tuesday after fulfilling his club duties with Japanese side Nagoya Grampus.
He trained under new coach Ange Postecoglou for the first time on Wednesday and admits there was a noticeable lift in energy within the squad.
"I've only just arrived yesterday morning so everything's quite fresh and quite new with a new boss and a few new faces in the team but so far so good," he said.
"I think automatically everybody wants to put their best foot forward.
"Definitely there was a lot of enthusiasm in training this morning, and I think that comes automatically with a new coach and everybody wants to impress.
"Everybody wants to try to impress and play this game on Tuesday and obviously for the future be a part of the team for the World Cup."
Asked if he expects the rest of the world to underestimate the current side following 6-0 thumpings at the hands of Brazil and France, Kennedy replied: "Maybe that was the case in 2006 since we had the big gap between World Cups but to be there now in three consecutive World Cups most of the world knows who we are and what we're about and they definitely shouldn't write us of, that's for sure."
The current crop of Socceroos met the pioneering 1974 World Cup side at a function in Sydney on Wednesday afternoon.
"I don't think most of the boys will know what an honour it was to meet these guys today, I think that's something that probably comes with age and experience," Kennedy said.
"But definitely we want to help soccer in Australia become number one and leave a legacy like these guys have."
Josh Kennedy focusing on World Cup
