Existential thought is full of shit
You don’t know this world, all you have is your current experience in the moment
Any information you ‘think’ you know is just a perspective and a temporary one at that
So sure are you that you know everything and the way the universe is and yourself and how it will all go and end?
Please Go out into your experience of reality and just enjoy the process of whatever happens
Stop believing your own bullshit
Come back to the I that is aware of these thoughts and know that your default setting is peace and joy. You only experience these thoughts when you are not being the real you, awareness. Once you return to yourself, thoughts and fears disappear naturally because they cannot survive the light of awareness that you are. So explore your “I”. Rupert Spira and Michael A Singer can help!