Slaven Bilic is desperate to cure West Ham of the 'cramp' which has taken hold this season.
The Hammers grabbed a much-needed win, after six games without a victory, by sinking Burnley 1-0.
But Mark Noble's winning goal, the rebound after his own penalty was saved, was a fittingly unconvincing way to settle the match after another nervous display from Bilic's side.
"It was a very important win and very hard fought," said the Hammers boss.
"It was a long game, to be fair, but I think we deserved it. It was two different halves, in the first half we controlled the game and s hould have been two up.
"I have praised the players for the three points but in the second half I saw what I call that cramp, when you are afraid of winning.
"It happens to clubs who are underachieving. I don't want it. The only way it goes away is by winning games and climbing the table.
"Hopefully on Saturday against Hull we will see less of that cramp, and we will be more confident."
Noble and Pedro Obiang had already been denied by the woodwork when, in first-half stoppage time, Ben Mee fouled Winston Reid to concede the penalty.
Noble's weak effort was saved by Tom Heaton but the relieved midfielder got a second bite of the cherry to tuck in the rebound.
However, Clarets boss Sean Dyche felt Heaton was fouled by Michail Antonio just prior to the penalty being awarded, and that his goalkeeper was punished for being too honest.
"I'm frustrated we can't get the decision," he said. "It's a clear foul. Every other keeper in the league would have gone down and flailed around on the ground.
"Ours does it the proper way and that used to be applauded. Now we are called naive. But we'll stick to what we believe in."
Burnley could still have taken something from the match but for a shocking miss from Sam Vokes, who headed over an empty net from six yards, and a superb save from Darren Randolph to deny Scott Arfield.
"We were better in the second half and that's why I'm so frustrated at the referee's decision," added Dyche.
"Vokesy should score but their defender tried to overhead kick it and he flinches at the last second. If that's in the middle of the pitch that's a foul as well.
"We are disappointed with the outcome but not the performance."
Source: PA
