Be Enthusiastic - In Gita Verse 2.24 This individual soul is unbreakable and insoluble, and can be neither burned nor dried. He is everlasting, present everywhere, unchangeable, immovable and eternally the same.
Krishna is saying, soul, which is part of everyone in this universe, which connects everyone (It is like a thread in the pearl necklace) and it cannot be destroyed.
Parents have given us the body, but life is given by universe through soul, which is eternal.
Besides what religion says, science too says the same, even by Einstein said matter cannot be created nor can be destroyed. Means everything in this universe as matter changing their forms but life in every one is the same and eternal. Which can be experience through silence.
Look into your own experience, when you are enthusiastic can anyone make you angry or upset. I have not used the word happy, as happiness depends upon circumstances or other people. But enthusiasm depends upon you. You are calm, connected. It looks very insignificant, but think when you are enthusiastic at that time no one can destroy your calmness, which is just first step towards your self-awareness of soul. Means your soul can not be destroyed if you are connected with your subjectivity.
What is enthusiasm?
A simple meaning for the word enthusiasm is to have a keen interest. It means you demonstrate an eagerness and a joy that fills you with energy. If you approach any task without enthusiasm, the task will be laborious. You will find yourself watching the clock waiting for the day to be over. You are just putting in time, bored, unhappy, and truly not enjoying life. But what a difference it would make when you are energized.
When you have keen interest you are total, you become vast, in simple language if your entire room where lot of things are scattered then you will be hitting something or other, but if the room is tidy and well arranged then you will be able to walk or sit comfortably. Similarly when you are keen your thoughts are following you, you can guide your thoughts and you get the guidance from your inner sources. You will not get angry or upset. As you have connected with universe. Something is moving, flowing and growing. The aliveness, that is your connection with universe which is eternal.
If you dissect the seed you will not find the hidden tree in it. But if you allow it to grow it will become a tree. In the same way if you can watch consciously this kind of incidence when you are enthusiastic, you will find nothing can disturb your body, mind and emotion, and slowly you will experience that something is there which cannot be destroyed. But it grows. You need conscious watching. Allow it.
And you will know you are not the body, you are not the mind. You will simply know you are only awareness and nothing else. The body goes on changing, the mind goes on changing, but there is one thing in you which is unchanging, absolutely unchanging; that is your awareness. It was exactly the same when you were a child and it will remain exactly the same when you are old . It was the same when you were born and it will be the same when you die. It was the same before your birth, it will be the same after your death. It is the ONLY thing in existence which is eternal, unchanging, the only thing that abides.
And only this eternal awareness can be the true home, nothing else, because everything else is a flux. And we go on clinging to the changing; then we create misery, because it changes and we want it not to change. We are asking for the impossible, and because the impossible cannot happen we fall into misery again and again.
What exactly happens when you are enthusiastic - you grow in your consciousness, you connect yourself with your subjectivity, which is your soul, so when you are enthusiastic you always feel fresh. Pay attention to small acts of ours, we don’t have to run after anything, everything around us is giving us opportunity to grow in consciousness.
We have evolved from the animal body to human body, and only human being in this existence can grow in consciousness, means existence gave us human body but with the seed of consciousness to grow, go beyond dual life, happy - unhappy, love - hate, etc. Now it is our responsibility to grow in consciousness drop dual nature and experience through our subjectivity, soul the eternity.
Krishna is not preaching to Arjuna that our soul is eternal. As Arjuna in his awareness was connected with his subjectivity and knowing well that soul is eternal, cannot be destroyed. Krishna is just reminding him.
Our living master also gives us a reminder to drop our unconsciousness and look directly, allow the grow of the seed of consciousness.