If you were to take a mental field trip and visit your future self, the one who is no longer struggling with the situation that is currently causing you the most stress, what advice would he or she give you?
That guy -- the perfect package, the one who's ambitious and emotionally articulate and gorgeous -- doesn't actually exist. And if he happens to embody all three of those qualities, I guarantee you that he has other "imperfections".
Because we're poorly educated about transitions in our culture, we mistake the fear for doubt and thus begins a scary domino effect of believing that we're in the wrong relationship. The message is: If you're doubting, you must be settling.
When we're told that we can have it all, that everything is on the table, why would we ever commit to anything? Even if we know we love the thing to which we're committing, we can't help but wonder about all the things we didn't choose.