Originally Posted by Petrarch's Love
Perhaps neither "resignation" nor "helplessness" quite covers his view of despair in the world. I think it's a matter of "recognition." In the first portion of each stanza he recognizes something that either is bad or has the potential to become bad in his life. Perhaps there are some ways in which he goes so far as acceptance of certain things that happen in life over which he has no control, but I don't think it ever goes so far as resignation, and, as Jackyyyy says, accepting earthly hardships does not preclude hope in some heavenly good (not that I think hope is relegated to the next world here--there seem to be plenty of points for hope on this earth).
The final lines of each stanza are more like a repeated prayer than anything else. They are requests that "Hope" will act to fight against and sheild him from despair. This externalization and personification of Hope does give the impression of the speaker being in a passive, plaintive position. At the same time, however, the struggle is actually an internal one. Hope is something within the poet. He is calling upon something within himself, appealing to the better instincts of his own personality.