Yes, though sometimes it is hard to find and even harder to keep, it is necessary. Without it, who would we be.
I often have a hard time keeping faith in what I am doing as I work on a piece. You have this fabulous idea that looks so good in your head. Then it starts to pour out and feels even better on the canvas. In the beginning the colours are pure, the strokes are free and you just flow. Something emerges and you go with it. Then it hits, that deep dark ugly part that you try so hard to avoid. Slap some more paint on that might fix it, or I could move in this direction.... then yuck. What now? Pull out some rubbing alcohol and some sand paper and take out all your frustration on that canvas and when you have something left that you would like to add something to... you go with it.