Anyone reading this for the first time will probably notice how quickly it pulls you under. The speaker is in emotional pain so heavy it feels physical: the harder they gasp, the less they can breathe, and the more they struggle, the deeper they sink. Even the heart, "this source of life," seems to clench against them, as though hurting is simply what they deserve.
The middle section turns to questions and sayings. Grabbing the rose by its thorns suggests a habit of reaching for things that wound, while grabbing the bull by its horns is the brave, direct action the speaker can't seem to manage. Other people get a "clear sky," but the speaker has a storm of thunder and lightning that only they can hear, which makes the suffering feel isolating. The ending is bleak. With no strength left to resist, the speaker falls, and the short, broken lines, ending on the single word "Pained," leave a mood of exhaustion and defeat.