Important Verse of Srimad Bhagvad gita -16

For him who has conquered the mind, the mind is the best of friends; but for one who has failed to do so, his very mind will be the greatest enemy.....6:6


अपने  द्वारा  अपना  संसार -समुद्र  से  उद्धार  कर  और  अपनेको  अधोगातिमे  न  डाले ,   क्यों की यह  मनुष्य  आप  ही  तो  अपना  मित्र  है  और  आप  ही  अपना  शत्रु है।।...6:5
जिस  जीवा त्मा द्वारा  मन  और  इन्द्रियों  सहित  जीता  हुआ  है , उस जीवात्मा तो वह आप ही मित्र है और  जिसके  द्वारा  मन  तथा  इन्द्रियों  सहित  शरीर  नहीं  जीता  गया  हो  उसके  लिए  वह  आप ही  शत्रु  के  सद्र्श  शत्रुता  में  बरता है।.........6:6

It should be clearly comprehend that attachment to worldly pleasures locks one to samsara or the endless cycle of birth and death while contrarily detachment from the infatuation of worldly pleasures frees one from samsara. So everyone should try to elevate themselves with determination by training their mind with constant practice to be unattached to sense objects. Lord Krishna is revealing the method of escaping perpetual incarceration in the material existence. The mind has the propensity to be one's dearest friend so why not utilise it to uplift oneself out of material darkness and into spiritual light. A controlled mind can accomplish so many beneficial endeavours for one's wellbeing. Whereas an uncontrolled mind is one's worst enemy performing base and degrading activities leading to destruction.

Now a question may asked as to whom is the mind a friend and for whom is the mind an enemy? Lord Krishna clarifies that the mind is the friend to that person who having complete control over the physical body, the senses and the mind has conquered their lower nature. The mind is the enemy to the person who is unable to control the physical body, the senses and the mind due to not having conquered their lower nature. As is stated by the sage Parasara: Man's mentality is verily the root cause of either their liberation or their bondage. The mind obsessed with sensual pleasures is bondage whereas the mind devoid of the desire to enjoy sensual pleasures leads to moksa or liberation from material existence.

Notes: 1) once the jeeva ( individual soul)begin to develop understanding that am not the body concept and he start to believe that he is a soul, than he will surely Probe the characteristic of soul.

2) When jeeva understand the mind and its mechanism, its emotions and his inner mind than jeeva will develop Equanimity and stay away from the all dualities such as cold and heat, happiness and distress, honour and dishonour. Such persons are serene and peaceful in all situations because they are established in spiritual knowledge and get a glimpse of godhead.

3) Most important is the ignorance of self, we could not identify yourself  and due to influence of environment we continually in trap of illusion created by past experiences , but by the Grace of guru the illusion vanishes and the light shines again.we can know the true self.