Diffrence between a Karma-Yogi and Others

Yuktah karmaphalam tyaktwa shanthim aapnothi naishtikim |

Ayuktah kaamakarena phalesaktho nibadhyate || 5.12 ||

Meaning:

"The united one (the well-poised or the harmonised) , having abandoned the fruit of action, attains Eternal Peace; the non-united (the unsteady or the unbalanced) , impelled by desire and attached to the fruit, is bound."

My understanding:

For one who is Karma-Yogin, bondage of karmas will not be there because of his awareness and knowledge of Karmayoga. He gets full of peace even though he is acting in the world, because he has no attachments. But for others, who are non-Yogins this Karma/action will be a bondage, because they have expectations and attachments with the fruit of their actions.

Commentary by Chinmayananda Swami:

Through right actions, undertaken without any self-dissipating anxiety for the fruits of those actions, a Karma-Yogin can reach an indescribable peace, arising out of the sense of steadfastness within him. Peace is not a product manufactured by any economic condition or cooked up by any political set-up. It cannot be ordered by constitution-making bodies or international assemblies. It is the mental condition in the bosom of the individual when his inner world is not agitated by any mad storms of disturbing thoughts. Peace is an unbroken sense of joy and it is the fragrance of an integrated personality. That, this can be brought about through selfless actions undertaken in a spirit of Yajna, is the revolutionising theory given here. When the worker is "ESTABLISHED IN HIS RENUNCIATION OF THE EGOISTIC SENSE OF AGENCY" and when he has "RENOUNCED HIS EGO-CENTRIC DESIRES FOR THE FRUITS OF HIS ACTIONS," he soon becomes integrated and comes to experience the peace of steadfastness.

Not satisfied by this positive assertion, the Lord is re-emphasising this very same philosophical truth in the language of negation. He says that when one is not ESTABLISHED (Ayuktah) in the renunciation of "agency," and because of his desires, gets himself tied down to some expected results of his actions, he gets bound and persecuted by the reactions of his own actions. Some medicines, which, in small doses can give a complete cure, can also spell death in larger doses --- for example, the sleeping tablets. An instrument by which we can defend ourselves can itself be the instrument for our own suicide.

In the same way, when we work in the outer field unintelligently, instead of gaining a greater glow of satisfaction and joy within, we will get ourselves more and more bound, and hurled down into bottomless darkness. The cause for this has been beautifully explained by Sri Krishna. Due to desires for specific fruits, we are mentally attached to those wished-for patterns to be fulfilled in future. This is compelling life to patternise itself to our will at a future moment; if a frog were to imitate a bull and grow to the bull's size, it would end in a tragedy; a mortal finite mind ordering a pattern for a future period of time, is in no way better equipped than the frog that tries to expand to the size of a bull.