Charlton boss Chris Powell hailed his side's spirit after they secured back-to-back away-day wins and in the process inflicted a third loss in four games on Blackpool.
Chris Solly, 21, settled the Charlton nerves 17 minutes from time as he fired in from long range to earn a 2-0 win after Leon Cort had earlier given the Addicks a surprise lead.
"I'm very, very pleased with our response from the loss on Tuesday (at home to Watford)," said Powell. "It was a real accomplished performance from the players.
"We weathered some first-half pressure but we knew it would be a test of character. I'm a big fan of (Blackpool boss) Ian Holloway and I knew we'd have to defend stoutly and we did that.
"In this league if you nudge in front you've got a real chance to win games. We've been hurt in recent games and I've been asking my side to keep a clean sheet because we've got goals in us.
"Tom Ince and Kevin Phillips came on but we were never under relentless pressure, but every player stuck to the task and I'm pleased we got the two goals, a clean sheet and I couldn't be happier.
"I never scored a goal like that in my career. Chris Solly is a right-back by trade playing out of position but he's been superb for me since I started managing the club and he's a real favourite with the players and supporters."
Charlton were recording only their second clean sheet of the season and a first win at Bloomfield Road since 1981.
"I'm very bitterly disappointed," said Holloway. "For all the good stuff in the first half and the possession and chances, we didn't create what we should. I expected more of the same in the second half and it didn't happen. Our Achilles heel has been balls into the box and it happened again. I'm fuming, absolutely fuming.
"One of the zones we covered was vacated by somebody telling somebody else to mark someone. We should have had somebody on that heading it away, as we've done in the last few games."