The Cottagers can bounce back to the Premier League after just one season if they are able to beat Brentford at Wembley on Tuesday.
“Along the way this year you can see there are still those wounds which we need to make into thick scars, and make sure they do not reappear," Parker said.
“I realised the squad was fragile, the football club was fragile and we had these separate bands. At the forefront of my mind was trying to bring the club back together a little bit and try to create an environment and culture.
“In all successful clubs and businesses, it comes from a core foundation, when everything runs in the right way and everyone is on the same page. The club was very disjointed. We were in a bad spell. It has been a rocky road because you can't just have a magic wand and go from real disbelief, a real weak mentality, and disconnection and within two months be fighting to win."