How to not get delusional and keep sanity?

[Recursoinominado]

As i progress in the spiritual path, more i have to detach from the social narrative and follow my intuition, inner guidance even when only i believe in my choices, the more i raise my self-esteem, more i tend to have thoughts like "maybe i am an old soul that incarnated in a fucked up situation (horrible childhood) in order to get into the spiritual path as a way to transcend the pain and remember all my knowledge and wisdom in order to help the planet to ascend". Or even "i am the next Jesus" thoughts appeared in my experience field which is rapidly scolded with thoughts like: put yourself in your place, you are not special.

Both, in my opinion, can be extremely deceiving and toxic. The first one is narcissistic (low self-esteem) and the last one is defeated ( also low self-esteem).

How can i deal with thoughts like those? I can't simply ignore them because losing my mind is one of my biggest fears since mental illness is really common in my family and i want to go so deep on this path that i need to keep myself in check once in a while (still learning how to do it).

[OneWithAll]

Firstly, you can rest assured that there is no such thing as mental illness. Sounds to me like your ego is trying to create stories. You know what you have to do. Follow Leo's guidance. 

[Truth Addict]

@Recursoinominado

Don't you see it? What is a thought but a pointer?

A thought is never the actual thing.

Point is: stop believing them.