Ruby in Zoisite is an amazing heart stone, providing both strength and balance. It can be used to enhance both self-love and self-esteem.
Here is a healing layout from The Crystal Handbook, by Simon and Sue Lilly. To align your heart with a goal or intention you have, place a ring of 12 quartz points (points facing outward) around your body. Place a ruby in zoisite on your heart. Focus on the goal and breathe it into your heart for as long as you feel the energy. When you feel your goal is energized, remove the stones and go forward with your day.