The 31-year-old midfielder has been passed fit to feature at Hampden Park this weekend in what will be his first ever final as a professional.
"It's hard to put it into words," said Goodwin. "It's the kind of thing that you dream about as a young boy when you are out playing football with your mates.
"To have the opportunity now at 31 to lead a team out at the national stadium is a fantastic moment personally for me and the club.
"This is my first cup final. We won the European cup Under-16 with Ireland, but that seems like a hell of a long time ago now."
Goodwin's career has seen him play for Hamilton, Oldham, Huddersfield, Scunthorpe, Stockport and Celtic.