Here's a little spell to help you get control of your creativity. Prepare your sacred space as normal, then light two yellow or red candles and call upon your muses. Mix a half cup of sand with three teaspoons vervain in a small bowl. On the sand, focus your intention of being block-free. Suffuse the sand completely with your will. Hold an obsidian stone, ring, or pendant in your cupped hands, seeing it as an empty object ready to absorb the sand's energy. Bury the obsidian in the sand for three days. Keep the stone with you when working, taking it in hand when you feel a creative lapse.