Spurs struggled for goals under Andre Villas-Boas this season, scoring just 15 times in 16 league games under the Portuguese, but have netted seven in three matches since Tim Sherwood took the reins.
With a visit to the site of last season's famous 3-2 victory - their first over United since 1989 - looming on Wednesday, Eriksen insists they have no reason not to maintain their positive mindset.
|4/6||Tottenham and Man Utd are 4/6 with BetVictor to both score on Jan 1|
"United are a better team than Stoke and we have respect for them, but we have to be on our toes and go there and play a good game."
Eriksen's sentiments are borne of personal experience, having already tasted victory on United's home turf with his previous club.
"I played there with Ajax [in a Europa League tie in February 2012] and it was a big thing for young players. We won and played a very good game.
"Just play free. When you play there the only thing you should be afraid of are the players. If you can get the crowd quiet you're doing a good job.
"We were not afraid [with Ajax] and just played our own game, and if you do that you can make it difficult for any team."
Eriksen credits Sherwood for reinforcing Spurs' attacking philosophy and admits he is enjoying life under the new boss at White Hart Lane.
When asked what advice Sherwood gives to his players, the Dane replied: "'Enjoy it.' That's what he says to everyone. Play positive. I'm a player who loves that so it's good for me.
"The coach said in some of the other games we looked a bit afraid. Now you see we're really good and if we dare we're a really good team and can create really good chances.
"We've been fighting and we're still fighting. We have had chances in every game and just haven't scored. Hopefully we'll keep having the luck and what you see now is how we should play."