The speaker begins the poem by acknowledging the difficulties they have faced in their life. They have experienced "doom" and "stain," but despite these challenges, they have managed to maintain their sense of self. They are "unspotted from world," meaning that they have not been corrupted by the world's evil.
The speaker goes on to say that their "own" is the one thing that has remained constant in their life. This could be interpreted in a number of ways. It could refer to the speaker's inner self, their moral compass, or the people who they love. Whatever it is, the speaker's "own" is the source of their strength and resilience.
The poem ends with the speaker reaffirming their commitment to their "own." They say, "I'll keep it for death," indicating that they will remain true to themselves until the very end.
The overall message of the poem is one of hope and resilience. Even in the face of adversity, it is possible to maintain one's sense of self and stay true to one's values. The speaker's "own" is a symbol of this hope and resilience.