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// Stability Just Out Of Reach 
// Story: And if I don't belong... 
// by RejectOwl 
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Twilight tapped her hooves on the glass, quite enjoying the sound, she began to tap out a song. 

"What is that melody Twilight?" Luna asked.

"Huh?" Twilight asked snapping out of her daze.

"You were tapping on the window, it seemed like a song." Luna said.

"Oh... I don't know, I wasn't really paying attention." She sighed.

"Are you alright Little Lamb?" Luna asked softly.

"I don't even know." Twilight muttered.

"Do you want to talk about it?" 

"No." Twilight mumbled into her foreleg.

"Are you going to anyway?" Luna asked.

"Fiiiine. I just... feel so worthless, like, all the time. I mean yeah I'm happy sometimes, but it's still there Luna. I still feel like I'm just a pathetic damaged little filly who can't even control her own life! If my own parents didn't love me, who ever will?"

"Twilight Sparkle!" Luna chided. "I loved you from the moment I met you. You saved me Twilight. I owe my life to you."

"Is that the only reason you're trying to help me? Repay a debt? Because if it is, you might as well leave." She answered.

"Twilight! I would never think to do all I've done simply to repay a debt." Luna was genuinely hurt Twilight would think that of her, she had to remind herself Twilight was dealing with depression to not let the hurt cut deep.

"I'm not worth it Luna, I'm just going to keep messing up and keep going back to wanting to kill myself. You have better ponies you could be trying to save. I'm a lost cause." 

"Nopony is a lost cause!" Luna exclaimed. "Especially not you Twilight!"

"Am I ever going to be normal again? No? Lost cause." Twilight replied.

"Define "Normal" for me first." Luna said. "It doesn't exist." 

"Normal, as an adjetive, conforming to a standard; usual, typical, or expected. As a noun, the usual, average, or typical state or condition. As a technical definition, a line at right angles to a given line or surface." Twilight recited, as if she'd swallowed a dictionary.

"Twilight." Luna said flatly, clearly not amused by Twilight's snark. 

"Hey, you asked me to define normal, I did." 

"Normal in relation to ponies does not exist." Luna corrected with a sigh.

"I'm pretty sure normal ponies don't try to off themselves with poison." Twilight answered.

"Normal ponies also don't go crazy and transform into a monstrous pony with fangs and try to cause eternal night either, but what can you do?" Luna smirked.

"That's different!" Twilight defended.

"It's really not." Luna answered. "You tried to kill yourself, I tried to kill an entire world. Had I succeeded in bringing about eternal night, everything eventually would have died."

"Not everything." Twilight mumbled defensively. 

"Yes, everything, there needs to be a balance." Luna sighed. "Just as there needs to be balance in your mind Twilight, light and dark, too much light can make you, well a bit crazy, too full of yourself, cocky and prone to disaster, too much dark, and you lose your way. You need balance, and that's what all of this therapy is about, finding that balance."