"Sleep wrapped its comforting arms around me."
Personification. A simile would compare two things, such as, "The library was as dark as the inside of a coal mine at midnight," or "The library was as quiet as inside the losing team's bus heading home."
b. The winds are light and the sea is sleeping quietly today.
Metaphor
Personification
It is personification without meaning to use personification
There is no personification going on here.
The alert sun stretched its rays through the clouds, eager to awaken the sleeping earth.
No, personification does not have a prefix
personification
"At last slow morning crept up the cliff" and "Turtle tip toed into the sleeping apartment" p.4
personification
Personification