Reading books and doing pratikraman brought a noticable change in me of which, I was not aware of but it was marked by others. And with the help of this Knowledge, I am experiencing lots of Positivity within myself.
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In English: http://www.dadabhagwan.org/self-realization/
In Hindi: http://hindi.dadabhagwan.org/self-realization/
In Gujarati: http://www.dadabhagwan.in/self-realization/