Yes indeed, such interference can happen during sleep - it's because most are then rendered unaware of what's going on, they're more out-of-the-body so more easily influenced, and mostly people are unable to shape what then happens.

In my observation, the only real way to prevent this is our full enlightenment. Essentially by progressively moving beyond identity (as we've outlined in Five Gateways).

In so doing we become increasingly present. You're then present even in your sleep - sleep as such does not happen anymore. In such states of presence, it's possible to project ones consciousness and shape lucid dreaming.

Ultimately you are rendered practically beyond the interference of Opposing Consciousness.

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