If a film or any piece of work doesn't entertain, it fails - and that is using the word entertain literally, meaning it holds you there and you become absorbed by it so that you don't walk away and get bored and so on.
You try to tap into a memory and you close your eyes and it comes back. So I was doing this in the painting and then that became a practice of mine. Sometimes it was a cathartic situation, a way to meditate.