I would like to know how one can reach the spiritual heart during meditation.
The spiritual heart is located right in the centre of the chest. You can feel the spiritual heart when you are aspiring intensely, and you can also see it with the third eye. If you find it difficult to meditate on the spiritual heart, you can concentrate on the physical heart in the chest. But after you meditate there for a few months or for a year, you will feel that inside the ordinary human heart is the divine heart, and inside the divine heart is the soul. When you feel this, you will start meditating on the spiritual heart.
To reach the spiritual heart you have to feel that you do not have a mind, you do not have arms, you do not have legs, you have only the heart. Then you have to feel that you do not have the heart, but that you are the heart. When you can feel that you are the heart and nothing else, then easily you will be able to reach your spiritual heart during your meditation.