There's a state that one one tries to find where instinct takes over, your mind is of single focus and your movements flow through the brush. You are not concerned about anything because the paint will do what is intended. That's when it's fun. It becomes for you and only you. It's the journey and it's in the moment. The outside world melts away. You know not hunger, cold or have need of anything. A perfect nirvana, zen or meditation if you need a reference. It's being in the zone. Time stands still and when you are finished there is Peace. Once you've been there and you realize that's where you want to go, it gets easier to revisit.