as far as smb/smth is concerned

(from Idioms in Speech)

as far as somebody (something) is involved, as to somebody; inasmuch as something involves one

As far as I'm concerned I've never danced a step since I married. (W. S. Maugham)

Betty found a place for us here, and as far as I'm concerned I don't care where I go while I'm writing the novel. It's quiet enough here. (J. Wain)

As far as this evening was concerned, Моr was anxious to warn Demoyte not to mention the matter in Nan's presence. (I. Murdoch)