In order to get to that point where a strong image starts to emerge, I must not try to take the painting in a particular direction. Sometimes I deliberately sabotage something that emerges too early. Usually I rotate the painting and paint upside-down or sideways to prevent getting trapped by my own expectations. Reasoning is not conducive to creativity. The more logical you are the more handcuffed you are by what you are supposed to do next.
Creativity comes from play.
You only need to compare the creative output of adults and children to realise that. I believe that art is more about feelings than concepts. Feelings are better expressed in images than words. If I wanted to be logical I'd do it in words. I'm not interested in words.