stuck to one's last

Verb

stick to one's last (third-person singular simple present sticks to one's last, present participle sticking to one's last, simple past and past participle stuck to one's last)

1. (idiomatic) To stick to one's knitting (to concentrate on one's own tasks, affairs, area of expertise etc.).
   • But never one to stick to his last, James founded the Little Big Band in 1993, which launched him on nearly a decade of swing material. Recent years have found him venturing back into rock and he says, “I think it’s time to hit the blues again” when asked what’s around the bend.2013 March 15, Richard Ouzounian, “Colin James: Blazing his own path for 25 years”, in Toronto Star