(Just below, I only translated the comment posted in French by Lobuś on the original version)
"Comme d'habitude" (Transposed by me in "Like everyday") is a song written by Gilles Thibaut and Claude François, to music composed by Jacques Revaux and Claude François, released in November 1967. Performed in France by Claude François, the song meets with success, and then gains an international reputation through its adaptation in English by Paul Anka, first interpreter of My Way, then by Frank Sinatra.
For my part, I would add that this song was written by Claude François for the attention of the singer France Gall (France Gall - "Ela, elle a" released in 1987) with whom he lived an intense love story at the same time, but briefly, after the latter left him.