Jeroen Zoet admits PSV are struggling to come to terms with their lack of goals after yet another draw in the Eredivisie.
The 0-0 stalemate in Tilburg against Willem II was their fourth draw in six games as the defending league champions lost further ground on front-runners Ajax and Feyenood.
While Zoet concedes the frustrations are high, he feels they need to look ahead towards their midweek Champions League tie against Atletico Madrid.
"It is very frustrating that we return to Eindhoven with only a point. We are having a difficult time of late and we must remain positive and ensure that we keep clean sheets," he said after the match.
"We now look forward to Wednesday and playing away against Atletico Madrid in the Champions League.
"We have dropped points again tonight and that is disappointing because we have been playing better this season away from home rather than at home.
"Everybody in the changing room has the feeling that would should have won tonight especially in the period of 20-25 minutes in the second half where we played really well and we were convinced that we would score."
De Boeren trail current league leaders Ajax by four points and Feyenoord by three, although Giovanni van Bronckhorst's side have the chance to reclaim top spot when they take on PEC Zwolle on Sunday evening.