Self-renunciation, n.
The act of renouncing, or setting aside, one's own wishes, claims, etc.; self-sacrifice.
Shades of meaning
Fernald has no entry of its own for self-renunciation; he lists it under self-abnegation.
Where he writes about it:
Self-renunciation surrenders conscious rights and claims; self-abnegation forgets that there is anything to surrender. — from self-abnegation
There have been devotees who practised very little self-denial with very much self-renunciation. — from self-abnegation