Essence of The Gita:

Why do you worry without any rhyme or reason? Who are you afraid of? Who can kill you? The soul neither takes birth nor dies.

Whatever happened happened for the best. Whatever is happening is also happening for the best. Whatever will happen, that too will be for the best. Don’t repent over the past. Don’t worry for the future. Present is going on.

What have you lost for which you cry? What did you bring with you which you have lost? What had you produced, which has perished? You didn't bring anything. Whatever you have, you had it from here. Whatever you have given, you have given it only here. Whatever you have taken, you have taken it from him the almighty. Whatever you have rendered, you have rendered to him. You came empty handed & will go the same way. Whatever is yours today was somebody else’s yesterday & will be somebody else’s the day after tomorrow. You are delighted in feeling it as your own. Alas; this happiness is the root cause of your agonies.

Change is the law of the universe. What you understand as death is in reality, the life. You become a millionaire in moments & the next moment you are a pauper. Let the thought about mine-yours, small-big, my own-someone else’s be wiped off your mind. Then everything is yours & you belong to everyone & vice-versa.

Neither the body is yours, nor do you belong to the body. The body is constituted of fire, water, air, earth & ether & it will disappear into these. However the soul is steady. That is what is real & that is what you really are.

You surrender yourself to god. That is the best anchor. One who knows about this anchor is liberated of fears, anxieties, pain, sorrow, etc. forever.

Whatever you are acted upon, continue to dedicate it to god. By doing so you will realize eternal happiness/love/truth of the liberated one.