Hackett is keen not to over-hype Saturday's showpiece against Bradford at the national stadium and put too much pressure on the occasion.
The 30-year-old insists it will be business as usual at Sixfields this week in the lead up to the match.
"It's a big game but we won't be changing too much about our routine and I think that's important," said Hackett.
"It's exciting for the supporters, but as a player this is your job and you have to be focussed on what you're there to do.
"I think making sure your routine is the same is important. We've played 48 league games this season, including the semi-final against Cheltenham, and we need to treat it like all the others.
"If you over-think things that can lead to problems but I think everyone here is level-headed enough and that won't be an issue."