Sale sit rock-bottom of the Aviva Premiership table, five points behind closest rivals London Irish, and are currently favourites to follow in the footsteps of fellow northern clubs Newcastle and Leeds by being relegated to the Championship.
Seymour, who has been at the club since 2009, told premiershiprugby.com: "Everyone is aware of the challenges ahead. Everyone is trying to find a bit extra - that's what we have to do. The buzzword can be momentum - it's amazing how after two or three wins, you can be in a completely different place."
He added: "That's a massive thing and we need to get a hold of that by getting a massive result this week, the following week and the week after that. If so, things start moving on pretty quickly.
"You look to your senior guys to help get you through. We're lucky - people like Mark Cueto, Dwayne Peel and Nick Macleod.
"We're quite lucky there, with people like Andy Powell, who are still young but with loads of experience which is great.
"There are a number of guys who got through it last year and are part of the rebuilding process, and the guys who have been here for four or five years - 10, in the terms of Cuets (Cueto).
"They're the guys that have experienced that and are Sale Sharks through and through. Everyone needs to step up really and give 100 per cent - we're the senior guys to rely on."
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