Paul Lambert's side spent much of last season sweating on their top flight future, but eventually rallied to finish in 15th place - five points clear of trouble.
There are only four points separating them from the drop zone at present this term, and they have gone four games without a win to suggest another survival scrap could be on the cards.
Westwood is convinced that Villa can avoid being dragged into the bottom three, but admits that costly errors - such as the one which led to a late winner for Newcastle United on Sunday - need to be eradicated if they are to remain among English football's elite.
The 23-year-old midfielder told the club's official website: "You can't dwell on this.
"A lot of people had their say, but that's football and we'll come out fighting next week.
"It is disappointing at the time but there are always games to eradicate the previous mistakes.
"We looked comfortable (against Newcastle) and we had chances to win it. We've said a lot of times if you can't win the game don't lose it, but unfortunately we conceded in the 90th minute.
"We've had a chat in there and it is something we need to work on - seeing games out better.
"We're a good team and on our day we'll match anyone.
"We've shown that before and we won't get too disheartened by that. It's time to go again next week (against Norwich City) now."