If you define your ontology by yourself
it’s a failure because it’s selfish.
You need to start from the beginning
i.e. Mankind.
And you will find your purpose via teleology.
This means that what you do
and what you’ll do
will have a meaning
for the others.
This is a way to go further
and beyond the end.
Because Mankind needs you at this level only.
Only at that level you can help.
That’s why altruism will be a foundation
in your reconstruction.
and then you will feel
the necessity to do something
which is pure good.
Not the best.
Just good.
And this will be sufficient.