I would recommend using cleansed and charged stones, and putting them under your pillow at night. You can also put them under your bed. I'd recommend Amethyst or Labradorite. That's only my recommendation, because certain stones do different things for every person. Labradorite, to me, is considered a dream stone. Ameythst is connected to your "third eye", or your mind, and helps "open" it up.
You can cleanse them by burying them in the Earth, soaking them in salt water (but be careful about Selenite, that will dissolve in water), of even as simple as running cold water over the stone in the sink, because flowing water is purifying. Charge them by putting them in the sunlight for a few hours, or even sit them in the windowsill throughout the day.