Foreshadowing

Work a lifetime to pay off a house. You finally own it, and there’s nobody to live in it. —Willy, Death of a Salesman

Jumper - Third Eye Blind

I can't say that I'm unsympathetic for Willy, because I feel bad

for anyone, fictional or not, who commits suicide to escape

life. I kind of wish someone would've played this song for him. 

There are multiple instances where Miller foreshadows Willy's future. The title is the first place. Death of a salesman: well, Willy is a suicidal salesman. The second part of the story that solidifies how Willy will eventually die is when Linda comes right out and says that Willy has attempted suicide multiple times. Also, the quote at the top the page foreshadows the ending. Linda assures Willy that people will always be around to live in their home, but ironically, she ends up being alone in the end. She nearly reiterates this exact sentence in the Requiem of the play. All of these aspects point to Willy's suicide. The suicide seemed like a noble way to die and assist his struggling son in Willy's mind. Willy's discontent with life was leading him down a path of destruction that finally put him over the edge one night.