Rin Otori
The heart chakra located at the center of the chest, is the chakra of compassion and love. Your ability handling issues of love, grief, hatred, anger, jealousy, fears of betrayal, and loneliness depends on the condition of your heart chakra. You will find that if you open your heart chakra, handling these issues in a positive way will come more naturally to you. A popular technique often used for exercising our heart energy, is through mantra meditation. Each chakra has a specific sound or "mantra", by reciting the heart chakra's mantra you will effectively be able to open the chakra point, effectively stimulating and strengthening it in the process.
If you happen to have a mala, which is a special string of beads used for counting mantra recitations you can use it for this exercise. If you don't that's okay, you can just count the recitations in your head instead.
Before we proceed with the exercise, I would like to forewarn you that this is a serious technique that 
will generate a large flow of energy. Please be careful not to overdo it, over stimulation of
the heart chakra can lead to an imbalance of the other chakras. This technique should only be used
in addition with other techniques that will prepare you body to handle this new energy.
Now without any further delay, here are my guidelines to performing this mantra meditation.
1.Find a quiet and comfortable place to sit down on the floor cross legged.
2. Close your eyes, and recite the heart chakra's mantra which is "YAM".
3. As you are chanting this visualize and focus on your heart chakra at the center of your chest.
If chanted correctly, you will notice a new rush of energy. For beginners, I recommend that you do not exceed more than 20 recitations per session.
For more information you can visit my website Open Heart Chakra