What does so-called success or failure matter if only you have succeeded in doing the thing you set out to do. The DOING is all that really counts.
I approach writing a poem in a much different state than when I am writing prose. It's almost as if I were working in a different language when I'm writing poetry. The words - what they are and what they can become - the possibilities of the words are vastly expanded for me when I'm writing a poem.