As long as you have attachment to the body and attachment to objects, fear and suffering will be with you. Therefore Krishna told Arjuna to develop his discrimination and rid himself of body consciousness. Only then he would be able to develop integral vision.
To uphold righteousness, so supreme an act did he perform; he gave his head, but did not utter a word of sorrow. For the sake of righteousness, he did this great heroic deed; he laid down his life but not the principles… Guru Tegh Bahadur broke his earthly vase on the head of the Emperor of Delhi – and went to the abode of God.
The entire world may not change. But your tiny world you can and will change forever at this very moment with the help of your confidence-heart. Yours will be the unparalleled victory.

