Here

Desire is a dark chasm, I need someone who can stand on the edge of it (and not fall in).

This world is losing touch with it's heart, And those who have gained a heart have often sacrificed their brain.  Unfortunately, we have been born in a world where certain actions work at achieving our goals and certain actions don't.  If everything worked to express how we feel, it would be so much easier to follow your heart, but anyone who has done so has found that following your heart often creates a larger mess than your good intentions would have asked for.

We live bound by reality, action/consequence, birth/death. The first we embrace, the second we try and escape.  Those who have opened their heart have found that vulnerability leads to pain.  Which is true, but only partially true.  Vulnerability only leads to the possibility of pain.  We open our hearts, we get stabbed.  We throw our pearls before swine, they get trampled.  How often does this lead to people keeping their treasures to themselves?  Now that we've hidden our hearts, it is our brain that we depend on, this logical mind, where survival comes first and we are lost in desperation of the want to never feel pain again.  Don't you live in fear of hurt?  True hurt, not like "I work, I get the job done" kind of hurt but the hurt that comes from knowing who you are and seeing it rejected by the ones who you love most.  I doubt you've never felt that way, first girlfriend? Disappointed father?  Doing your best and just that not being enough, even though cliché tells you it is okay (to do your best), clichés are just words we try to repeat so much we believe them, they aren't what we believe naturally.  Our heart is natural, it dictates to us what we think and feel,  Not as a product of rational behavior but as a simple reflex.  It is a reflex that gets trained, sharpened by mistakes.  Like the mouse that gets the electric shock while going for the cheese. Some learn not to try, others learn that they'll have to think about it, learn where the hurt is coming from.  You want what you want, figure out how to get it.  I agree, if something hurts you while you are doing it, it isn't worth doing.  But if you want something bad enough, you'll find a way to get it where the benefit of obtaining is so much greater than the cost.

It's efficiency, it always has been, we follow our hearts to our desires, we use our brains to achieve it efficiently.  No part out of balance, no machinery out of whack.  Fear doesn't dictate what is worth having, it just dictates how much effort you will put in to get there.