Spider in the snow by Dismemberment Plan. It's a song about not really getting close to anyone and watching your life go by. Why? Because I probably have seen myself in it a few times in my life.
It can be, but I think the song is more meant to be a wake up call to anyone in that situation. It took me a long time to realize it, but kinda is what makes me occasionally come back to it. Would heavily recommend the Emergency and Me album, kinda stands the test of time.