The theories of self and not self I find very intriguing paradoxes. In hinduism, there is theory of a self, as well as in many other spiritual paths. However, Buddhism speaks of a not-self, and says in their own special terms, to cling even to a notion of self would be false, we cannot know this hidden 'self' directly, therefore, its not self.
This is connected to the emptiness of the five skandas. If all forms are empty, self is empty too, therefore, it is not-self. Which if one does the work, they see this has some validity. Because its too easy to cling to a self, a higher self, an 'other self' yet still, could be accidentally replacing (or thinking they are), the ego with another 'self.' But buddhism says, that clinging to self isnt a true self, cause self and notion of is empty, so not-self. It makes sense in a way, for this to occur. Because as we still deal with mind here, and we still must function with ego in some capacity, we're going to deal with trap of this.
So I have this thing say, when we say we must align with source, or true self, how do we do it, if the notion buddhists have portrayed of not-self is factual? All forms are empty, they managed to present that as actual. If all is impermanent, where is a possible permanent self, which might have the divinity to be able to pull off a good move of continuity beyond this life? There does seem to be hope, however, because somehow lamas are born where they want to be in tibet. Somehow, they have to admit the consciousness travels and is born again, not the exact same cause all is subject to change and transformation. But the buddha nature, does remain intact. Since all have buddha nature, and this is professed by the mahayana school, then this, even if it is essense of 'not self' is key to be able to possibly transform
Where I am at, if I am correct, is it is a matter of in each life the buddha nature blooming. Buddha would teach Anada the highest truths by simply holding up a flower. This makes sense. Seed of buddha nature, blooming and opening its petals. Its all impermanent, but the blooming is what we're supposed to do, in the light of the sun. If the sun can be allowed to penetrate the flower, then the flower can bloom. If the right nourishment is allowed for the flower, it can bloom. It can then, transform, it doesnt really die, in the end, it can also sew many other seeds as well, from one seed or flower. It can be an endless journey if one wishes. But it cannot, if one, ceases to be, one flower, and fails to go beyond the bud.