"Fire And Rain"
James Taylor
Who is Suzanne?
Susie Schnerr was a friend from JT´s Greenwich Village days. She committed suicide while he was in London recording his debut album but his friends didn´t want to bring him down during his big break, so they kept it from him until later.
"You've just got to see me through another day"
The phrase "another day" here and in the song of the same name both refer to recovery from addiction.
"Sweet dreams and flying machines in pieces on the ground"
The Flying Machine was the name of JT´s first band, which broke up when he left for England and his eventual solo debut. Stories claiming the line refers to an actual plane crash are just urban legends.