The Ferns' star said there were moments early on when she wondered if she had bitten off more than she can she could chew.
"There were definitely times when self-doubt set in," said Langman, who will on Monday night face her old side the Waikato-Bay of Plenty Magic in the semifinals.
"I think within the first two days I said to my husband, 'I think I'm going to be coming home with you on Wednesday'.
"The rumours around the level of expectation and quality that is demanded among the team was very true and I quickly had to get my ducks in a row and front up, and be able to do that time and time again."
Langman said the most difficult adjustment was learning the Swifts game style. With the bulk of the NSW team having been together for some time, it made for some humbling moments for her.
"It was a real challenge to set aside my natural tendencies and not go off fishing as I call it. It required a lot of discipline," she said.
"And also learning to judge when to play each style was a massive challenge for me, and still is."
Langman said she still isn't at the point where she feels entirely comfortable in the Swifts set-up, but she sees it as a good thing. After all, it was a desire to get out of her comfort zone that saw the veteran midcourter seek out a contract in Australia.
"As a sportsperson you never know how big your window is and how long you're going to go, and I wanted to see how far I could go."
The Swifts are hoping Langman can take them as far as another ANZ Championship title. The Sydney-based side won the first transtasman league title in 2008, and they believe it will only be fitting for them to end the competition with the trophy as well.
But the Swifts faltered badly last week, suffering an 11-goal loss to the Queensland Firebirds in the Australian conference final, to set up a match against surprise New Zealand champions, the Magic.
Langman, who captained the Magic to New Zealand's sole transtasman league title in 2012, knows just how dangerous her former side can be in playoff netball.
"They're a team that has shifted hugely towards the end of the season and all the players are really coming to the forefront in terms of form," she said.
"Their experience in finals series is paying dividends for them and they know how to rise to the occasion, which is a huge belief to have."
In the other semifinal, the Southern Steel must pick themselves up from last week's shock loss and travel to Brisbane to take on the defending champion Queensland Firebirds.