example: Mia is such a pig everytime she eats.She slobbers everywhere and doesn't even try to clean up after herself.I had a nightmare one time that the pig was her and she was talking to me.
Do you understand what now what you do?
Personification is easiest cause its giving a object a human trait like breathing or talking.
I would say that William Blake directs the poem's praise to the gentleness of nature. The book where all these poems are written is called Songs of Innocence, so it is obvious what he is talking about.
