Huddersfield interim coach Luke Robinson was frustrated with his side as they slipped to another narrow Super League defeat.
The 18-14 reverse to Wakefield on Thursday was the fifth time the Giants have lost by four points or less since the competition restarted.
Their Inability to close out matches has ended any hopes of a top four finish, leaving Robinson frustrated.
He said: “There have been that many narrow losses now that I think it is a mental block.
“I just think that whenever we get into those pressure situations, where the heat is on and the game is in the balance, I can see the doubt a little bit.
“It is mine, the staff’s and the players’ job to take some accountability when we do go into those moments, how we come away with the victory as oppose to narrow losses.
“For me, we just do not build pressure, both defensively and with the ball.
“I think that, especially in that first half, the energy battle was in their favour. I thought we defended very gallantly on our own goal line.
“I said to the lads at half-time that pressure hurts but staying pressure kills and we just put ourselves under too much pressure.
“Dropping the ball in yardage and giving away penalties was eventually going to hurt us and it did.”
The Giants overturned an early 6-0 deficit to lead 14-6 during the second half in St Helens, only to let their opponents back in through a combination of errors and ill discipline.
Elaborating on their late collapse, Robinson said: “I did think we could have had them when we led 14-6, but we missed a fair few goals.
“We scored the same amount of tries but failed to kick as many goals. That is sometimes going to happen and I will not blame anybody for that.
“When we led by eight points, I thought we had the ascendancy but I was never truly confident with the way this season has gone.
“The amount of losses we have had by narrow defeats, I was never ultra-confident, but I thought we had a foothold in the game before things started to unravel again.”