The 28-year-old midfielder heads for Tottenham on Sunday having scored three times in his last five appearances, and he prays his injury problems are finally behind him.
Glenn Roeder: "I do not know what he was like before the 18 months of stop and start - and it was more stop than start - but he is certainly a very happy man around the place.
"He is one of the main figures in the squad. He is given a lot of respect by the rest of the players because of his ability and just because of how he is as a person.
"Every morning, I see a Kieron Dyer who comes in to training with a smile on his face, and that pleases me because too often last year, I saw him come in with a sad, miserable, 'I wonder why this is happening to me?' syndrome.
"Now I see a man who is very, very happy and content with his life and that is showing in his performances.
"He is just going to continue to get better and better between now and the end of the season. The more match practice he gets, the better he will become.
"Kieron Dyer is one of many senior players I am sure will make an impression over the second half of the season."