Crystals could be “programmed” or dedicated to a specific purpose of your choosing (best time= after cleansing it).
1-Choose a crystal that resonates with your desired intention.
2-Feel the energy of the crystal (in your hands).
3-Get into a calm and relaxed state of mind (you can take a deep breath, light on an incense, sit quietly, use meditation music etc.)
4-Visualize yourself living your intention (place the crystal on your third eye).
5-Send your feeling of gratitude (hold the crystal over your heart and send out your feelings of gratitude into the Universe).
6-Feel the joy and let it flow from your heart right into your crystal. Then go ahead and just say: “May it be done. It already is. Thank you.”
You can also:
-Do a quick meditation. Hold the crystal in your hands thinking about your intention.
-Use positive affirmations (e.g. repeat aloud: I am love, I attract love, I am a prosperity magnet etc.)
-Write down your intention on a piece of paper and place the crystal right on top of it.