Well, the inspiration is as follows:
It's based loosely on myself. And I guess if I was singing to anyone I'd be singing to God or myself (if we want to apply it to my life) but it works out so that it's open to interpretation.
I suffer from depression (hence, the pills) and I'm not satisfied with myself as a person, meaning my behavior and motives. Self-actualization I guess it's what it's about, and the person in the song is trying to help me (or whoever) become a better person.
And as far as the sun thing... We're all just so small compared to both the sun (if you want to be literal) and everything we don't know or understand.
I'm thinking the moon reference is more obvious.
Yeah, so that's it, I hope the explanation works for ya.