I would say that the lines which show us how desperate the poet is are the following:
"... helpless in my throes, Biting my truant pen, beating myself for spite--"
As you can see here, the poet says he is helpless, meaning that he cannot find inspiration to write what he wants to write. Therefore he is desperate for some inspiration, which is why he is biting his truant pen in order to show how anxious he is to get his inspiration back.
The answer is finishing reading a summarry
<span>When you feel like you've written a lot without really saying anything the best thing to do is B. put your draft aside for a couple of days and then review your thesis and main points.
If you aren't in a hurry to write, then this is definitely what you should do. This way, you will feel rejuvenated and perhaps come up with many new ideas that you will be able to implement into your writing. Thus, you won't repeat the same points all the time.
</span>
