Emotional Endgame

"If the phone doesn't ring, it's me...."
Indifference - the emotional equivalent of "I don't give a fuck anymore." Well past the stages of upset-about and fed-up with, it's the final phase of dealing with people, places and things that have gone from unacceptable to over-the-freaking top.
You know you're at this stage when no matter what is said, done or imagined, it makes no impression, and there is little to no response let alone reaction on your part.
It's at this point that cooler heads really do prevail--you're just plain DONE with it. (my apologies for those who take issue by ending a sentence with a prepositional phrase and kudos to those who neither know nor care about prepositional phrases) It's also a far more comfortable feeling than the aforementioned negative states.
Indifference can be habit-forming, so as with all indulgence, moderation is the key. It beats the hell out of emotional turmoil and mental masturbation, yes, but be wary of this or any other negative perspective settling into your head and heart.
Rather, let your life be tempered with healthy love of self. As Ehrmann wrote, "in the noisy confusion of life, keep peace in your soul. With all its sham, drudgery and broken dreams, it is still a beautiful world. Be cheerful. Strive to be happy."