The 22-year-old starred for the Republic of Ireland in the Far East and earned rave reviews from commentators. This convinced Keane that he needed to 'kick on' and play more frequently at club level.
"It's very important," said Keane. "No player wants to be sitting on the bench - I want to play in every game possible. I believe that to get the best out of players you need to play them regularly.
"It is certainly that way in my case. I need to be playing now after the World Cup and need to kick on from that, hopefully I'll get the opportunity now to play a lot more than I have been.
"It's a good club and I'm looking forward to the challenge ahead."
Keane watched our victory over Southampton from the Directors' Box and afterwards confirmed his admiration for Teddy Sheringham and Les Ferdinand.
"It was a great penalty by Teddy and, up to that, we'd have probably been happy with a point, but lucky enough we got the three.
"Southampton played very well and made it hard for us. Luckily we nicked it in the end.
"I've got a lot of respect for Teddy Sheringham and Les Ferdinand. I'm looking forward to maybe playing with both of them, or whatever."
Robbie Keane explained that playing in the World Cup reinforced his belief that he needs regular first team action.