Grace

I have been thinking about mystical experiences and Grace recently...
Grace as in divine love and protection.
Mystical experiences as in feelings of connectedness with everything.
The thought comes to me that the two can be the same.
I am also wondering if this is comparable to communion with your Holy Guardian Angel...
Perhaps
It, certainly to me, sounds like Samadhi.
I suppose Sahaj samadhi is more like Grace; the effortless and continual state of perfection.
How to attain?
Now thats the rub.