The Royals boss said: "I thought we started the game very brightly. We were on the front foot, I think we had four crosses in the first couple of minutes.
"It was a good goal from the set play, a good delivery from Jordan Obita and Kaspars on the end of it.
"I thought we played some good football in the first half against what I believe is a good side in Watford.
"We've got a lot of players out who have been out injured for a long time and obviously (it comes) on the back of a couple of disappointing results over Christmas.
"But the resolve that the players have gone and demonstrated again in the second half has shown the togetherness of everybody, the desire to work hard and that started with the front two going all the way through the team.
"We're really looking forward and we've got to enjoy the second half of the season.
"We've had an abundance of injuries all the way through we've had to deal with, there's been an inconsistency in team selection because of that.
"Obviously the form over Christmas with the results going against us wasn't ideal and Leicester are doing a great job now where they are in the league.
"But we're back on track for the play-off positions with 21 games to go and we're really going to enjoy the second half of the season."