Bhagavad Gita verses on person with steady higher wisdom (stithaprajna) being content with Atma (self)

First let us see what is meaning of the word stithaprajna. It is composed of two main words - stitha and prajna. As per my understanding, stitha means steady or fixed. For prajna, https://en.wikipedia.org/wiki/Prajna_(Hinduism) tells us:

"Prajña or Pragya[a] (Sanskrit: प्रज्ञ) as प्रज्ञा, प्राज्ञ and प्राज्ञा is used to refer to the highest and purest form of wisdom, intelligence and understanding. Pragya is the state of wisdom which is higher than the knowledge obtained by reasoning and inference."

I love the second sentence above as I think it gives a great explanation of prajna as wisdom higher than knowledge obtained by reasoning and inference. So I use the term "higher wisdom" for prajna rather than just wisdom.

Given below is the relevant first verse, Chapter 2 verse 54 https://shlokam.org/bhagavad-gita/2-54 , which is the question posed by Arjuna and the second verse which is the first part of the answer by Krishna, and is the immediately next verse in the Bhagavad Gita (English translation of verses below are slightly edited by me):

अर्जुन उवाच ।

स्थितप्रज्ञस्य का भाषा समाधिस्थस्य केशव ।

स्थितधीः किं प्रभाषेत किमासीत व्रजेत किम् ॥ २-५४॥

arjuna uvāca

sthitaprajñasya kā bhāṣā samādhisthasya keśava

sthitadhīḥ kiṃ prabhāṣeta kimāsīta vrajeta kim

Arjuna said: What, O Keshava, is the description of him who has steady [Ravi: higher] Wisdom and who is merged in the Superconscious state? How does one of steady Wisdom speak, how does he sit, how does he walk?

श्रीभगवानुवाच ।

प्रजहाति यदा कामान्सर्वान्पार्थ मनोगतान् ।

आत्मन्येवात्मना तुष्टः स्थितप्रज्ञस्तदोच्यते ॥ २-५५॥

śrībhagavānuvāca

prajahāti yadā kāmānsarvānpārtha manogatān

ātmanyevātmanā tuṣṭaḥ sthitaprajñastadocyate

The Blessed Lord said: When a man completely casts off, O Partha, all the desires of the mind, and is satisfied in the Self by the Self, then is he said to be one of steady [Ravi: higher] Wisdom.

--- end extracts from shlokam.org ---

I think being content (satisfied) in our inner being (Atma/Self) and not being swayed by desires of the mind, is a great achievement for a spiritual aspirant. I think it may be easier to achieve that when one is not having physical pain and suffering. And I think at least some mystics achieve it (being content in one's self) even when one is having physical pain and suffering.

I should also say that my understanding is that such contentment in one's self may or may not involve expansion of consciousness beyond one's body.

[I thank Wikipedia and shlokam.org, and have presumed that they will not have any objections to me sharing the above extract(s) from their website on this post which is freely viewable by all, and does not have any financial profit motive whatsoever.]