The Hammers have slipped down to 14th place in the table in recent weeks thanks to a run of one win in seven matches.
"We have to go to Stoke and give it a good go, and I feel we have more than enough in the team to do that," Collins told the club's official website.
"The way we started the season showed what we are capable of. We are training hard, we want to win every game and that is no different against Stoke, who we know will be tough on their own ground, but I strongly believe if we keep playing the way we are playing, the results will come."
West Ham and Stoke played out a 1-1 draw when they met at Upton Park in November.