The Spurs boss was furious with what he described as a "capitulation" after the north London side lost 4-0 to league-leader Chelsea at Stamford Bridge
Sherwood's men fell to a heavy defeat against league-leader Chelsea after goals from Samuel Eto'o, Eden Hazard and a double from Demba Ba.
And the Spurs boss insists the club must "wake up" if it is to aim for a top-four place, as Spurs are simply "miles away" from the top teams.
"You can't legislate for the capitulation - you can't have that," the 45-year-old told Sky Sports after the game.
"Lack of characters, too many of them too nice to each other and you need to show a bit more guts and not want to be someone's mate all the time. They need to drag it out of each other.
"It hurts me and I won't forget about this when we hit the motorway - but some might.
"It's not a penalty and not a sending off but the game was finished after that. We've got the Europa League on Thursday and we owe the fans a performance.
"We let them down again on the big occasion. You won't finish in the top four if you don't beat top teams. You're miles away unless you beat the top teams.
"There have been too many blips. The club talks about fourth, wake up."
Tottenham is now four points behind fourth-placed Manchester City, having played three games more than Manuel Pellegrini's men.
Their next Premier League encounter sees Spurs host Arsenal at White Hart Lane on Sunday March 16.