The lyrics of the song, in a similar theme to many other tracks written by Ray Davies, say that, no matter what's happening in the world, you must pick yourself up (since no one else is going to help you).
[1] The track also makes references to "the fascists and the left wing militants", "crooked politicians and the unemployment queues", and the Irish Republican Army, who, at the time, used illegal methods to attempt breaking away from Britain.
[1] The track also features Ron Lawrence playing bass guitar instead of Andy Pyle or John Dalton (the bassists that were members of the band at one point of the album's recording).
To add, "Live Life" replaced "Artificial Light" as the B-side of the "A Rock 'n' Roll Fantasy" single in America.
Then, on 14 July 1978, it was released as the second single from Misfits, backed with "In a Foreign Land" in Britain and "Black Messiah" in America.