You're always believing ahead of your evidence. What was the evidence I could write a poem? I just believed it. The most creative thing in us is to believe in a thing.
Heaven gives its glimpses only to those not in position to look too close.
The only way around is through.
What is required is sight and insight- then you might add one more: excite.
An idea is a feat of association, and the height of it is a good metaphor.
Like a piece of ice on a hot stove the poem must ride on its own melting.