Isn't it way too cliche to hear people say "Life is all about making a choice. Decide. Deal with it." ?
I no longer see it's the biggest obligation to learn how to choose the right one.
I start to tell my self that the biggest deal I should learn in my life is how I accept the fact to be the one who isn't chosen.
Not to be one's or certain persons' priority is never that easy to be accepted. Long, long lesson of acceptance.
By the way, comparison is inevitable. Deal with it.