It is a simile, because the author used the words (like) and (a), those are always hints that it is a simile.
He is grieving and doesn't want to be bothered at the love of his lifes' grave
I feel like he is saying that he is living in the joy or love of what he has created but that is just my opinion the meaningful textual evidence to support your answer is: "lived in a paradise of my own creation"
Hey guys we can do a lunch tomorrow if you’d like to come too so
Answer:
there is no option but idiom is an expression or phrases whose meaning doesn't relate to literal meaning of it words