Derby face Wednesday in today's FA Cup tie and Jewell recalled: "Sheffield Wednesday are similar to Derby in a lot of respects in that they're a big, terrific club with great support and a lot of potential.
"But at Sheffield Wednesday, it was a slog from the first day to the last.
"I went there because I couldn't get on with Geoffrey Richmond any more at Bradford, and I was excited by their name and support.
"But after they were relegated, something they have never really recovered from, they were forced to sell a number of their best players and bring in ones of lesser quality.
"It meant the team was hopeless, and it was really difficult. For me, it was a case out of the frying pan into the fire.
"There was just so much apathy amongst the players. They didn't want to be there, and it wouldn't have mattered who the manager was at the time.
"Now no-one likes getting the sack, and I'm not going to say our results were good because they weren't, so I'm not going to hide behind that, although there were mitigating circumstances.
"But when you are losing and times are tough, you find out about yourself and other people around you, and how you react in certain situations.
"In looking back, while I might have done things differently, I don't think I could have worked any harder to turn things round.
"I think since I left Sheffield Wednesday I've done okay, so I've nothing to prove to them.
"Yes, my eight months there were tough, but I learned an awful lot in that time.
"It is why I've come to Derby because if we are relegated - and there are no guarantees - I feel we will come back stronger."