The 26-year-old was among four uncapped players selected by England boss Gareth Southgate for Euro 2020 qualifiers against Bulgaria on Saturday and Kosovo three days later.
"When I was playing football part-time and working as a mortgage adviser I had different goals, playing for England seemed like a different world away," Mings told reporters. Mings played for Yate Town and Chippenham Town before getting his break at Ipswich Town in 2012. He joined Bournemouth three years later but lasted only six minutes on his debut against Leicester City due to a knee injury.