Actually, sleeping with your protective crystals is an excellent idea. For one thing, it will give you a closer connection to your crystals. This is useful when trying to become tied to your crystals and rely on them to guard you. Keeping them with you while sleeping can also protect you against bad dreams. If you're experiencing negative dreams these can be the result of the negative feelings and energies you collect. And, keeping your crystals with you will help you feel protected against these troubling night terrors.