A concluding quote from Blackmore’s Consciousness: A Very Short Introduction:
“The dualism between ‘me’ and ‘the world’ disappears into non-duality.”
And the final statement in the book:
“Both intellectually and in our own experience we should be able to stop being deluded and see through all those illusions of self, free will, and consciousness.”
Sam Harris wrote what was ever so ironic to this once struggling solipsist, that “it is, at least in principle, an experience that is available to anyone.”
Or pseudo-Dionysius, “here being neither oneself nor someone else, one is supremely united by a completely unknowing inactivity of all knowledge, and knows beyond the mind by knowing nothing.” And again “to the extent that every one of us is capable of it.”
The loss of self, non-duality, and solipsism are, once you have eyes to see, indistinguishable from one another.