Slaven Bilic insisted West Ham’s 3-1 Barclays Premier League win over Watford was crucial in their bid to reach the top four.
Andy Carroll hit his sixth goal in six games and Mark Noble tucked away two penalties to move the Hammers to within four points of fourth-placed Arsenal.
Bilic felt if West Ham failed to win they could kiss goodbye to their Champions League dream.
Instead, the Upton Park boss has targeted four victories from their last four matches to crank up the pressure on Arsenal, Manchester City and Manchester United.
“I told the players beforehand that this is kind of like a decisive game,” he said.
“This will determine if we are going to look up, or look down.
“It’s nice to have a cushion below and it’s nice to be three points behind United and to close the gap to City.
“We now have a break and we are going to use it to rest, then come back in really good shape for the last four games of the season. We’re going to give everything to win them.”