@Cyracuz,
The view I favour, "linguistic determinism", is that "thoughts" are "internal conversations". (Also known as the strong form of the Sapir-Whorf hypothesis) . It is futile to ask
who is having such conversations since such "selves" can be deemed to be an epiphenomenon of language itself (Daniel Dennett).
Fom my own point of view, I used to hold linguistic determinism as merely hypothetical until I began to realise that on being woken from a dream and writing down the bizarre aspects of the dream scenario, I noticed that "dream entities" were loosely linked to each other linguistically rather than logically.
...[For example, an instance of "playing
golf" could evoke "a woman in a
green...
dress" causing a switch to a scene of a "presidential ad
dress", by the president of the golf club]...