It seems that I've gone too far in my ambiguity. But since the text is rather generic replacing lines to change its mood is actually quite simple. I already had my doubts about the line "when you need warmth I'm deathly cold" (I still like it, but it did give the lyrics a 'creepy' atmosphere). Now I've re-written a few other lines as well to strengthen the light and positive aspects. The text is still not meant to be 'nice', 'light', or 'easygoing', yet it's not meant to be dark and threatening either:
I was there when you shit your pants
I fell in love with your first romance
I was the man in your wet dreams
I'm famous for my cunning schemes
I'll be with you when you despair
though sometimes I am hard to bear (was: when you need help I will be there)
now I am there to show the way (was: I place obstacles in your way)
then I'm the path that leads astray
live your dream before you wake up
live your life before you die
I kill people
I give birth
I make fortunes
I eat dirt but you see
I just want to be
one of seven billion
I'm your story as yet untold (was: when you need warmth I'm deathly cold)
I'll stay young while you grow old
eventually I'll see you die
nothing that could make me cry
live your dream before you wake up
live your life before you die
I kill people
I give birth
I make fortunes
I eat dirt but you see
I just want to be
one of seven billion
let me seduce you
give us a try
let me tease you
give me your smile
live your dream before you wake up
live your life before you die
I kill people
I give birth
I make fortunes
I eat dirt but you see
I just want to be
one of seven billion