"We shot ourselves in the foot again and it angers me," he said after the defeat in Southampton. "We've got stop giving the opposition an opportunity to hang onto something.
"When you're defending, if one steps out, the other one has to shut the door. We have to keep clean sheets, to give us a base to build from and at the moment we're not doing that."
Jones finally recongnises that we need to shoot a bit more. It was so obvious during the game at St Mary's that we needed efforts on goal rather than trying to walk the ball over the line. It's been a long time bone of contention with me that we don't shoot enough. Maybe now Jones has highlighted it he'll get the players to start having a pop at the target for outside the box.
"A lot of the results that are going against us are not because of what the opposition is doing to us," he continued. "It's because of what we do to ourselves.
"You can't keep bemoaning that we're playing well but not getting the results. And you can't keep expecting Robbie (Fowler) and Jimmy (Floyd Hasselbaink) to keep scoring all the time - it's got to come from other areas.
"We're trying to walk the ball in the net instead of shooting when we have the chance.
"If players can't live up to the expectation levels at the club, then they will go and we'll bring people in."