"For Liverpool, a draw is always disappointing but we have to keep going and there are a lot of games to play from now until the end of the season," said Riera.
"We've got a winning mentality in the dressing room, so to get a draw against Everton isn't the best result as we want to win every match.
"We have been defending well from set-pieces, and we do not usually let in goals so close to 90 minutes.
"I don't like to talk too much in football about teams being lucky, but at the moment Manchester United are scoring goals in the last minutes and we have now conceded a late goal.
"At least we're still on the same points as United and you can be sure we are going to keep on fighting with them.
"We have to be positive. You either say we lost two points, or you say we have won a point in a difficult race.
"We have to be happy with one point in such circumstances because it is never easy against Everton.
"We now have games soon against our direct rivals, so we have to continue the fight because it is not yet finished. We are confident we can do that."