How should one sit during meditation?

When meditating, it is important to keep the spine straight and erect, and to keep the body relaxed. You will find that your inner being will spontaneously take you to a comfortable position; it is up to you to maintain it. Some seekers like to meditate while laying down, but this is not advisable. You may enter into a world of sleep or into a kind of inner doze.

Again, the lotus position, which is an advanced yoga posture, is not necessary for proper meditation. Many people meditate very well while they are seated in a chair.
 

Every day
There is only one thing to learn:
how to be honestly happy.

Proper breathing

Proper breathing is very important in meditation. When breathing, try to inhale as slowly and quietly as possible, so that if somebody placed a tiny thread in front of your nose, it would not move at all. And try to exhale more slowly still. If possible, leave a short pause between the end of your exhalation and the beginning of your inhalation. If you can, hold your breath for a few seconds. But if it is difficult, do not do it. Never do anything that will harm your organs or respiratory system.

Meditating in the heart

If you meditate in the heart, you are meditating where the soul is. True, the light and consciousness of the soul permeate the whole body, but there is a specific place where the soul resides most of the time, and that is in the heart. If you want illumination, you have to get it from the soul, which is inside the heart. When you know what you want and where to find it, the sensible thing is to go to that place. Otherwise, it is like going to the hardware store to get groceries.

There is a vast difference between what you can get from the mind and what you can get from the heart. The mind is limited; the heart is unlimited. Deep within you are infinite peace, light and bliss. To get a limited quantity is an easy task. Meditation in the mind can give it to you. But you can get infinitely more if you meditate in the heart.

At most, what you can get from the mind is inspiration, which itself is limited. For real aspiration you have to go to the heart. Aspiration comes from the heart because the illumination of the soul is always there. When you meditate on the heart, not only do you get aspiration, but you also get the fulfilment of that aspiration: the soul's infinite peace, light and bliss.
 

If you want to see the Face of God,
then you must at least spend some time every day with His chosen instrument:
your own heart.