Despite doubts over his credentials, the Arsenal icon helped the Silkmen secure their League Two status, finishing three points clear off the relegation zone.
He told talkSPORT: “The whole situation completely stripped me down to be quite honest.
"I just had to be honest with the guys – all that was left was football.
"We all needed each other and I understood the players' grievances and anger.
"At the same time I had to remind them that their reputations were on the line: 'Do you want to get relegated? Who wants that on their CV?'
"People don't realise how much it takes to pick these players up, players who aren't getting paid and because of it are more than likely getting a hard time at home.
"It doesn't matter if it's one pound or a thousand pounds. In the end it comes down to principle and respect.
"Forget the amount… it's how you've been treated."
Campbell added: "I've worked damn hard to get into this position and I don't want to just give it away.
"That isn't me – I'm not that type of person.
"I'm not giving up on Macclesfield. I'll make it work, whatever way I have to."