Art has a quality of truth to it that is so pure that it is incapable of lying. I don't always acknowledge this truth when I should, but I work at it every day by journaling.
For example, I will often picture the art I want to create before it hits the paper, canvas, or sculpting form. Whenever I preplan everything, I will end up bemoaning how "this went differently in my head." Learning to let myself be surprised by the direction my creative exploration takes me, helps me to honor the truth of my art in whatever form it takes and in spite of my urge to control how flows.
My art journals provide me with the opportunity to have a truthful dialogue between myself and my creativity. When I get out of my own way and give equal value to both my spontiniety and intent, I'm almost always amazed at what happens!