Sometimes, when the firm understanding of no-self first comes upon you, it can unleash a vast reservoir of energy, especially if this understanding has dawned in a non-traditional context ie. without preparation of the body-mind.
That energy comes into and animates the body-mind, and energises it.
Sometimes negative, destructive, addictive and hedonistic habitual tendencies (vasanas) can be enhanced due to that injection of energy. We may feel negative or even euphoric, depending on the pre-existing conditioning.
Beware of this. Here the teachings on dispassion (vairagya) become more important than the insight (into no-self) teachings which have already begun to hit home.
Remember not to get involved or get carried away by such thoughts, desires, feelings and behaviours. Do not indulge in this (ego-) energy. The old ignorant habitual tendencies are still at play even though insight (into no-self) is here, and the suffering and potential destructiveness caused by them still has not been eradicated.
Instead continue to take up and press on with your sadhana: relax, remain calm, be still, allow all to come and go, be unattached, be as you are, until all the vasanas have gone. Then the sadhana will also go.
(please note, the title of this post is meant to be ironic!)
Tom Das 
Tom,
There is much wisdom in what you speak concerning vasanas or selfish nature being unleashed after the understanding of no self or in the Christian tradition the Sovereignty of God. In this way our liberty is turned into bondage. Therefore true libertyy must realized internally before manifesting in the relative world. You did not clarify the term sadhana in this post. Could you say a word about sadhana please?
Perfect Peace to You.
Contruple
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Thank you Contruple. Above I have written: ‘relax, remain calm, be still, allow all to come and go, be unattached, be as you are, until all the vasanas have gone. Then the sadhana will also go.’ This is but one form of sadhana.
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