To be perfectly honest, I've always been rubbish at painting with traditional media. They demand from their users a lot of organization and compulsion - both qualities I tend to lack sorely. When it comes to drawing however, I love nothing more than a good pencil (or Sennelier pastels if you're rich) and a piece of Canson paper. Nothing quite develops your ability to see the world as much as having to sketch it in 2D. And it is much easier to carry around than a computer, too!