The Saints captain enjoyed a superb season at St Mary's last term scoring nine goals for the south coast club, and his fine form was rewarded with a first call-up to the Three Lions squad last year.
Lallana eventually forced his way into England's 23-man World Cup squad, and ahead of the first game against Italy on Saturday, the 26-year-old revealed that he was thrilled to be in Brazil.
He told Sky Sports: "I want to be here and play, keep working hard in training and doing all I can to force myself in to the first 11. I know what my job is.
"The better I play the more chance I have to stay in the team or if not then to make a contribution from the bench.
"Everyone is entitled to their opinions. I am just going to keep focusing on training hard and doing as much as I can to impress the manager.
"Three years ago I was playing in League One so just to be here at a World Cup is a massive achievement and anything else is a bonus."
It's been a meteoric rise for Lallana who came up through the ranks with Southampton before being loaned to Bournemouth in 2007.
The attacking midfielder was part of the side that achieved promotions in League One and the Championship, before eventually finished eighth in the Premier League last season.
Lallana is widely tipped to start against the Azzurri on Saturday in Manaus, and has been the subject of a £25 million bid from Liverpool.
Following the game against the Italians, Hodgson's side meet Uruguay on June 19, before their final group game against Costa Rica on June 24.