Sherwood took charge following the departure of Andre Villas-Boas.
Reflecting on the last 48 hours, former Spurs captain Sherwood, who has never before managed a team, said: "It's madness.
"I'm up for a challenge. I always have been. I'm very opinionated.
"I know a certain way I need to play. I think I can manage men and deal with them and be honest with them.
"That decision going on is out of my hands, unfortunately."
Sherwood admitted Spurs' confidence is fragile.
He said: "The confidence is low. It takes a battering when you lose a few games, but it's up to whoever's in charge on Sunday and training on Friday to get them prepared.
"If it's me I certainly won't be going in all doom and gloom. You need to lift these guys and we have to go and get a result for the football club."
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