When will it be when we can completely sustain the awareness that we
are an individual and also the billions of others that exist on Earth
simultaneous?

It begins with one, but what is the key component for
the ultimate fortitude to do so?

When we confine to self, we ultimately feel alone, but when we think as the world and let go of ego, we in turn can lose our identity.

Gather the information provided by our environment, explorations, and experiences, avoid taking sides on any of it and really see the whole of it all.
You'll see an organism of truth. Truth!