The Higher Self: Is it really me?

[Cantando]

Hi everyone. This is my first post on this forum. Apologies, if this question has been answered elsewhere.
My question is: Is my Higher Self truly me, or is it a separate spiritual entity with it's own consciousness and goals? Am I a soul which has split off from this higher soul and will be reunited with it some time? And will our conscsiounesses eventually merge?
I am coming round to the idea that my Higher Self is in fact my future self, coming back in time to help me. If I progress spiritually from where I am now, in thousands of years time, I would be so advanced that I could look back in time and see myself as I am today. I read some of the Jane Robert's Seth material about 20 years ago, and I think Seth said to Jane that he was in fact a future version of her. Towards the end of the material, another far more advanced soul came through who was yet another version of her, from far into the future. She referred to these entities as Oversouls.
Is there any advanced soul out there who can help me on this?