In an exclusive interview with the Eagles' website (that will air on Wednesday), the 2006 premiership coach said quitting was difficult after 12 years of coaching the club he had been a part of for 24 years.
"It was a tough decision to make because I love the job and I love the footy club," Worsfold told Eagle Eye TV.
"There's a lot of reasons to stay but deep down to absolutely do the job to the best of your ability I felt I was going to struggle to do that and maintain my passion and enthusiasm."
Worsfold resigned on September 5 after his side finished the season 13th on the ladder with just nine wins. It was an unremarkable result for the club which started the year as one of the premiership favourites.
Despite the Eagles losing their last three matches to Geelong, Collingwood and Adelaide by a combined total of 214 points, Worsfold felt he still had the confidence of the board to continue coaching even though his enthusiasm had faded.
"I believe from my conversations with Trevor Nisbett and Alan Cransberg that I had the full support of the board to coach on providing I had the passion and providing I presented a plan that was going to be accepted by the board."
Worsfold is not only a West Coast premiership coach but premiership captain. The club has won three premierships and Worsfold has been a prominent figure in all, captaining the Eagles in 1992 and 1994 when they won their first two AFL flags.
He also played more than 200 games for West Coast, was a member of the club's inaugural 32-man squad in 1986, and won a best and fairest in 1988.
