Courteney Cox has “struggled to come to terms” with ageing. The 57-year-old actress – who is best known for playing Monica Geller in ‘Friends’ – has confessed to having a “midlife crisis” as she tried to come to terms with her new reality. She explained: “I wasn’t able to come to terms with the fact that I’m getting older. I think I was going through a midlife crisis.” The actress has been in an on-off relationship with Snow Patrol’s Johnny McDaid for almost a decade. And Courteney has confessed to sinking into depression after she went through a break-up, admitting that it “really affected [h…