The skipper believes the displays have been decent in our last three - against Liverpool, Aston Villa and Fulham - while accepting a return of one point from nine is not.
"Of course, we have spoken about it and feel that the performances haven't been too bad in the last three games, but obviously one point is far from ideal," he reasoned. "It make the Charlton game a massive one for us now and one we have to get three points from.
"I don't think we were playing so well before but we were getting results. Then, if you look at the Aston Villa game, I don't know how we didn't win that. Against Liverpool we didn't do too badly and there was only one goal in it, the same at Fulham.
"There is not too much wrong, but hopefully we can be a little bit more decisive in the final third. We are not downhearted, we are still confident and the Charlton game is a big one for us.
"We have got a good record at their place, while they have a good one at ours.
"I don't think too many of the lads are aware of that though. We can't think about it, it is about doing our job and making sure we get the three points."
Sunday's visitors to the Lane suffered a dip in form after a strong beginning to the campaign and lost six in a row over November and December before picking up again in the New Year. Ledley added that it is all about us now in bagging the points to maintain fourth spot after other results have contrived to keep us there in the last couple of weeks.
"Charlton are a good team with good players, but we are determined to do well and get the points that will keep us in a nice position. The fact that results have gone for us elsewhere this week makes this one a massive one for us.
"It is getting very close and a win for us would give us the confidence to push on again."
Meanwhile, Ledley concluded by welcoming the signing of Danny Murphy - a player he has lined up alongside before.
"I've played with him for England under-21s and full level and he is a very good player and a great addition to the squad. I saw that he second with assists in the league and that is terrific.
"If he can add a little bit to our team we have the forwards to take advantage."
Ledley King believes it is result more than the performance which needs to improve when the team take on Charlton Athletic on Sunday, kick-off 1.30pm.