Johnnie Jackson says he and his team are all hurting after the 4-0 home defeat to Oxford United.
Matty Taylor’s first-half brace was followed by goals from Sam Baldock and Cameron Brannagan in the second period as the visitors prevailed at The Valley.
“The result hurts, we’re all hurting,” Jackson told CharltonTV. “It’s a knock to your pride losing like that at home, so they should feel like that.
“No one is going to feel sorry for us, you have to pick yourself up and these are the moments when you find out a little bit about people.
“We’ve got to have the character to come out here again and put it right on Tuesday. We’ve got an opportunity to put it right straight away and that’s what we need to do.
“After we conceded I felt we didn’t deal well enough with that setback. We stopped doing the things that had got us a little bit of joy in those early parts of the game. I don’t think we really recovered from that first goal and then they got the second.
“I’m disappointed with the goals, especially that second one - I thought it was really avoidable. And then obviously you’re chasing the game and then you go down to 10 men, which makes it almost impossible to come back.
“[Matty] Taylor’s movement obviously caused us a lot of issues. He’s a good player. We know that he’s got excellent movement, he knows where the goal is and I thought he really caused us problems all day, really.”
Jackson says there was one positive to take though, as U18s winger Tyreece Campbell became the latest academy starlet to earn their Addicks bow.
“It was always my plan to try and get Tyreece on the pitch, obviously you’re hoping it will be in different circumstances,” said the boss. “That’s the only positive to take from the day.”