Arsenal striker Robin van Persie has admitted their quest for silverware has floundered this season as they are 'not good enough'.
Their shock Carling Cup final defeat to Birmingham was followed swiftly by a UEFA Champions League at the hands of Barcelona and an FA Cup quarter-final defeat by Manchester United.
The Gunners remain in contention for the Premier League title but are five points adrift of United with a game in hand - and van Persie accepts they have to learn the lessons of their previous disappointments to end the club's six-year trophy drought.
"We always do our best at Arsenal and always want to win," the Holland international said. "On a number of occasions we have been very close but, at the last moment, it's often not good enough. That's the reality.
"It's very frustrating when you lose, especially as a team when we're so close. But we have to look forward and now it's up to us to change all that.
"I firmly believe in the team, Arsenal and myself and I'm positive we will win prizes."
Van Persie has rejected suggestions that he could consider moving away from Emirates Stadium in a bid to secure more honours.
Van Persie, who saw red at the Nou Camp as Arsenal's European dream was ended by Barcelona, hit out at the Spanish side for the way they complained to the referee throughout the match.
And he accused Premier League rivals Chelsea of adopting similar tactics.
He said: "The Barca players were always complaining and moaning and that's something I dislike about them.
"In England, Chelsea players do the same. Barca are a great team but they don't have to exaggerate their continuous moaning, otherwise it becomes very irritating on the pitch."
