Last Thought, Next Form

Lord explains the departure and arrival process. (of an embodied being.)

This is the general rule how one leaves his current "holding place" and goes to the destination "holding place".

यं यं वापि स्मरन्भावं त्यजत्यन्ते कलेवरम्।
तं तमेवैति कौन्तेय सदा तद्भावभावितः।।8.6।।

yam yam va api smaran bhaavam tyajati ante kalevaram
tam tam eva eti kaunteya sadaa tat+bhaava bhaavitah.

The most important thought of one's life occupies the mind at the time of Death.
So, the last thoughts of a person will decide the next "form" (body) they are going to take. Also we are not sure when the time of death comes on to the current form (body).

So,
तस्मात्सर्वेषु कालेषु मामनुस्मर युध्य च।
मय्यर्पितमनोबुद्धिर्मामेवैष्यस्यसंशयम्।।8.7।।

tasmat sarveshu kaaleshu maam anusmara, yuddhya ca
mayi arpita manah + buddhi maam eva eshyasi asamshayam.

One should dedicate whole mental equipment to LORD and perform his own duty (In the current case Fight; that is the duty of Arjuna) all the time. The mind + intellect having surrendered to LORD will reach him alone. There is no doubt.

=============================================
Note: The embodied being is the higher nature that holds the aggregate of body + senses and Mind + intellect together. At the time of snapping the relationship between the instruments, this "jeeva" goes about to a new dwelling place in the direction of the last thought or last predominant nature...
=============================================