Lyric discussion by Guitarearl 

I can envision this being said over the phone to a brother or sister. A sad song, no doubt.

My eyes are open wide, by the way I made it through the day. I watch the world outside, by the way I'm leaving out today.

The protagonist's parents have tried to shelter him throughout his life. He goes out into the "ugly world" that they tried to shield from him, and he realizes it's the place where he fits most, and might have the talent to succeed. He cannot do that while remaining under their umbrella.

I just saw Hailey's Comet she waved Said, "Why are you always running in place? Even the man in the moon disappeared Somewhere in the stratosphere"

Halley's Comet (lyric is spelled incorrectly) appears once ever 75 years. This is partly a metaphor for life. Life span of a human is typically 75 years. Most people only get a chance to see Halley's Comet once, and likewise most people only have one chance to "make it." Basically, he sees his life flying by and realizes that he will never reach his goals if he hangs around. He also acknowledges the cyclical nature. "The Man In The Moon" is seen around the Full Moon, and goes away during the New Moon phase. He's basically saying that he will be back, but that the current circumstance needs to change in order for him to realize his ambitions.

Tell my mother, tell my father I've done the best I can To make them realize this is my life I hope they understand. I'm not angry, I'm just saying Sometimes goodbye is a second chance

I don't believe this is the first time he's tried to leave. Like I said, I hear this as a phone call from somewhere on the way to his final destination. It sounds like they've derailed previous attempts. If he takes them out of the decision, his spite towards their lack of support will not rise up, and maybe that kind of "goodbye" will allow the parent-child relationship to mend one day.

Please don't cry one tear for me I'm not afraid of what I have to say This is my one and only voice So listen close, it's only for today

Basically, he's sick of repeating himself to everyone in his family who wants him to be the person they want him to be. He's only going to explain one last time.

I think the element of this song that can be lost is that he doesn't want to lose the relationship. The phenomena that he mentions happen in cycles. He wants to return one day, but he can't right now. The problem is that his family are narrow thinking, to the point of this being "goodbye" for good (don't cry one tear). Instead, he wants them to know that he sees this as the only way to preserve their relationship as a family in the long run. Whether it works or not, who knows?

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