Gita Dhyanam is the 9-verses that are  associated with the beginning of the Bhagavad Gita. The first verse opens by affirming an act of meditation.  Bhagavad Gita is like loving mother and praised as the destroyer of rebirth and the shower-er of the nectar. The Upanishads are the cows milked by Lord Krishna, the son of Nanda, and Arjuna is the calf. Wise people and pure persons drink the milk, the supreme, immortal nectar of the Gita. You can meditate on Bhagavad Gita in many ways.

The chapter 6 of bhagavad gita explains the Dhyāna Yoga, the art of meditation. The important verses for meditation are as follows:

3. For the wise who seeks to attain yoga Karma-yoga is said to be the means; For the one who has attained yoga,
Equanimity becomes the means.

4. A person is said to have attained yogic perfection When there is no desire for sensual pleasures, Or attachment to the fruits of work, And has renounced all personal selfish motives.

5. One must elevate, not degrade, oneself By one’s own mind. The mind alone is one’s friend As well as one’s enemy.

6. The mind is the friend Of those who have control over it, And the mind acts like an enemy For those who do not control it.

7. One who has control over the mind Is tranquil in heat and cold, In pleasure and pain, and in honor and dishonor; And is ever steadfast with the Supreme Self.

11. In a clean place, having established for oneself a firm seat which is neither too high nor too low, and covering it with cloth, deer-skin and kusha grass one over the other,

12. there, sitting on the seat, focusing the mind in concentration, with the thoughts and the senses restrained,

13. Holding the trunk, head and neck erect, motionless and steady, focusing [the attention] at the tip of the nose ,

14. Serene and fearless, holding the mind in check and fixing the thoughts on Me, holding Me to be Supreme.