I’ve struggled with this ever since I came across it. The notion that all you can really be sure of is that you exist. It’s an idea that can’t be proven without refuting itself, but there is also no way to disprove it.
I’ve been in a sort of grey area over this for the past few years and whenever this flares up I get this great divide between me and the rest of the world. It’s only myself that feels real and it’s hard to be “there” when around other people because I doubt whether they really exist or not.
I’m not keen on the idea that the way out is to “believe”, since to me that sounds like a fairy tale. Like believing that other people exist and are real i sounds like I “lost the fight to it”. Sometimes I am overcome with terrible fear about the prospect of being alone in the universe and never having any meaningful relationships with another person.
Even this is an act of faith, posting on here. But I feel like I am losing the fight here and I’m not sure how else to deal with this.