"When you are winning big games in succession, when you are playing well, the confidence grows - especially when those games you have won include victories against Manchester United and Everton," said the Spaniard.
"The confidence is high and we aim to keep it that way. The wins over United and Everton have shown the team that they can beat anyone.
"Last season people were saying we could not beat the top three, but we deserved to beat United and it was the same against Everton. Those wins show how much we have improved."