When the former Manchester United manager took over from Slaven Bilic, things for the Irons looked bleak, however, the Scotsman has managed to turn things around.
"We want more ups than downs, the supporters want more ups than downs and we have had a few too many downs and and not enough ups and we know we need to do better".
Marko Arnautovic, who had been out since the middle of January with a hamstring injury, had been the standout performer throughout the game.
The Scotsman was handed a boost with the return of talismanic striker, Arnautovic, while Michail Antonio was handed a start after appearing as a second-half substitute during the defeat at the Amex Stadium.
But when Arnautovic, fit again after three games out injured, began to get on the ball West Ham looked a totally different team, especially to the one which surrendered so meekly at Brighton last weekend.
Fans have called for the "Ginge" to be offered a new deal to remain at the club, believing him to be a tank and felt he had earned the chance to have another year at the London Stadium. We will try to do better next time.
Watford head coach Javi Gracia: "We played well against Chelsea and we deserved the victory, whether it was against 10 men or 11 men".
And with the FA 5th Round being next week, West Ham will have a two week break before facing off against Liverpool at Anfield on February 24.
"We know we've got to do better".
"The most important thing I would say to everybody is unity, pulling together".