The surest insurance against mental instability and existential anxiety is the truth of unity.
Whenever you feel existential dread popping up, remember that you are not alone.
That existence includes you completely.
In fact existence includes you so completely that you don't even have a place in existence as a separate individual.
And although this might go counter to social and cultural beliefs and traditions, it is an actual existential fact beyond social beliefs and disbeliefs.
There is nothing you need to do to deserve or attain this.
It is already so.
You are already redeemed before you can even ask for it.