The 4 Power Techniques as discussed have worked in the past, working in the present & will work in the future. These timeless techniques shall pave huge dividends if it is consistently practiced each day. (31 Power Techniques authored by me is a ready reckoner for students of engineering & management & also for young aspirants from the corporate community).
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https://www.youtube.com/watch?v=qFXkMivtiB8