Seeing the Creator in All Entities

[jafar]

Is that kind of openness achievable in a 3D incarnation?

It's interesting that you mention the heart chakra. Often my feelings of isolation or disgust manifest in my solar plexus chakra. I haven't had a calm stomach in years.

Yes it's achievable at any density actually.
The default state of the heart chakra is 'opened', so to 'open' it all you need to do is not to close it.

There's a great book that explained this mechanism in easy to understand layman term:
The Untethered Soul: The Journey Beyond Yourself
https://www.amazon.com/Untethered-Soul-J...1572245379

It explained in very easy to understand manner on the 'circumstances' that makes you close your heart.
It cite an example of 'seeing your girlfriend with another man' as something that might trigger you to close your heart chakra.

That's why the 'challenge' for STO is to love the 'unlovable' person.
After you saw such event (or similar event) can you love the "other man"? or "the cheating girlfriend"? Thus keeping your heart chakra opened...