Blackpool looked like they had rescued the game in the 87th minute but Aiden O’Brien swiftly popped up with his third of the game to send the Black Cats through, without needing a dreaded penalty shootout, to scenes of unrivalled jubilation in the away end at Bloomfield Road.
"Every win is important, it really is," Johnson said.
"We're trying to win the trust of the supporters all the time, and it can be really, really powerful what you see at the end there.
"It buys you the odd bad performance because they see that the lads are putting it all in there, and they see that we are trusting youth.
"We did make a lot of mistakes today but we recovered through good attitudes.
"That is what youth brings you, sometimes they can be a little bit green but the enthusiasm is there for everyone to see.
"I thought it was a tough game.
"Both sides played their game and tried to impose the way they want to play on the other.
"It was a really good game.”
Games continue to come thick-and-fast for clubs who are all aiming to get some late transfer business concluded before the deadline on Tuesday 31 August.
We have gathered the best of today’s League One transfer gossip below:
A message from the Football Clubs Editor
Our aim is to provide you with the best, most up-to-date and most informative Sunderland AFC coverage 365 days a year.
This depth of coverage costs, so to help us maintain the high-quality reporting that you are used to, please consider taking out a subscription to our new sports-only package here.
Your support is much appreciated. Richard Mennear, Football Clubs Editor
1. Sheffield Wednesday chase former Boro winger
Nathaniel Mendez-Laing is reportedly a target for Sheffield Wednesday. The winger, who was released by Middlesbrough at the end of last season, would join The Owls as a replacement for Andre Green (Football League World).
(Photo by Stu Forster/Getty Images)
Photo: Stu Forster
2. Ipswich Town's Armando Dobra wanted by AFC Wimbledon
AFC Wimbledon join a host of League One and League Two clubs that are keen to take Armando Dobra on loan before the transfer window closes. Leyton Orient and Salford City are also reportedly interested (East Anglian Daily Times). (Photo by Naomi Baker/Getty Images)
Photo: Naomi Baker
3. Bristol City's Taylor Moore is a target for Portsmouth, Wigan and Hearts
Portsmouth, Wigan Athletic and Hearts are in the race to sign Taylor Moore from Bristol City. The Robins are reportedly willing to loan out Moore before deadline day. (Football Insider)
(Photo by Alex Burstow/Getty Images)
Photo: Alex Burstow
4. Blackpool 'submit' £300,000 bid for Vela
Shrewsbury Town's Josh Vela has reportedly been the subject of a £300,000 bid from Blackpool. The former Bolton Wanderers man is entering the final year of his contract (Football Insider) (Photo by Naomi Baker/Getty Images)
Photo: Naomi Baker