Single word describing something "outside of oneself"
ie.: The idea was "(blank)". It didn't come from myself, it was divine inspiration, dumb luck, etc.
or maybe: My essence/spirit was outside my body. It was "(blank)".
The two that immediately spring to mind would be external:
- Outside of something; on the exterior.
And extrinsic:
- external, separable from the thing itself, inessential
- not belonging to, outside of
In regard to the second part, if you truly felt your spirit had left your body, there is a set phrase for this: out-of-body experience.
People who have near-death experiences (another set phrase) often report out-of-body sensations as a part of the experience.
People who are able to intentionally induce an out-of-body experience, wherein they "travel" to other places, are practicing what is sometimes called astral projection.
See also remote viewing which has been a recurrent topic discussed by Art Bell on his radio show Coast to Coast am. Here is one such episode:
http://www.coasttocoastam.com/guest/dames-major-ed/5589
ecstasis or ekstasis: to be or stand outside oneself, a removal to elsewhere from ek- "out" and stasis "a stand" a form of ecstasy