The wind is everywhere in this poem. It comes from the north, south, east and west, and the speaker treats it as something that can be playful and harsh in turn. In the first stanza it scatters like confetti and messes up your hair, a light, almost cheerful picture. By the third stanza the mood has changed: the wind becomes "invisible blades" that cut the face and the tears of the person being addressed.
That shift is the heart of the poem. The wind seems to stand for the hard things life throws at us, which come from every direction and can feel both festive and painful. The speaker is tender toward someone they call "my love," and the line "Don't cry... winds wiped your cheeks" turns the wind into something that dries tears as well as causing them.
The ending, "Keep walking against them...", is trailing off, which leaves the poem open. The mood is gentle but determined: comfort first, then encouragement to carry on.