auto (one's own) + archy (rule) = sufficiency in oneself = Me taking care of me principle

 autarky (n.)💓

1610s, "self-sufficiency,"

from Greek autarkeia "sufficiency in oneself, independence," from autarkes "self-sufficient, having enough, independent of others" (also used of countries), from autos "self" (see auto-) + arkein "to ward off, keep off," also "to be strong enough, sufficient" (see archon). From a different Greek source than autarchy, and thus the distinct spelling. As a term in international economics, prominent late 1930s.

Related word : Autarkic.

https://www.etymonline.com/search?q=autarchy

You are self-sufficient when you trust yourself and know reasonably enough to make your own decisions and commit to them.

When one discovers the fullness of emptiness, one wishes for nothing more

Charlotte Brontë (Jane Eyre) once said "I care for myself. The more solitary, the more unstained I am, the more I will respect myself."