Even though the standard model and the big bang give a nearly self-consistent description of the universe as we currently measure it, they remain models, mental constructs, they are created by mind and are not actually reality per se. It is easy to forget this.
The only certainty in life is death.
The secret to immortality is not to ever be born again, to achieve paranirvana and cease that urge for continual phenomenal rebirth.
No thing in the universe is permanent, some things have longer material manifestations than others. That is all.
When a thought appears it passes through the mind like a ripple on a pond and when it has gone there is no mind, for mind in this context requires thought.
The point before thought is a pond undisturbed and simply reflects what it observes.