It's easy to look back on your complete submission and find yourself surrendering back to that place. That's what https://twitter.com/Mindstyl3r discovered in today's story.
First time writing ponies, be nice!

27. Recording

Shatteredmind woke with a stretch and a yawn, magically throwing the covers off his bed. For some reason he felt wonderfully well rested and lacked the usual grogginess of a morning wake up. The alicorn’s hooves clopped against the floor as he climbed out of bed, only to notice that a laptop had been left propped open at the far end of the room. Shattered approached with cautious curiosity; the device certainly wasn’t his, but there were no signs of intrusion into his room. Its origin was a mystery, yet he still felt compelled to investigate. He employed magic to press down on a key and watched as the screen flared to life from its standby mode.

The laptop displayed a video player, paused and resting on a black screen. Had this been set up intentionally? He was unnerved to say the least but would have felt more put off if he didn’t at least satiate his morbid curiosity. Another press of a key and the playback began. The recording started with the unsettling shot of Shatteredmind’s bedroom, and Shattered himself walking away from the camera after setting it up across from his bed. The alicorn glanced away from the screen to check if the camera was still there, and sure enough a small handheld video camera was sat on his bedside table, unnoticed until this moment. Shattered swallowed hard, he didn’t remember any of this; so he begrudgingly turned back to the video, hoping to fill in the gaps.

He could now see the same laptop in the video that he was watching the recording on, set in the exact same location; however the recorded screen was a very different display. A black and white spiral twisted on the screen with an undulating ripple to its rings. Something tugged idly at Shatteredmind’s subconscious as his eyes narrowed in on the spiral; a sense of familiarity came to him but it was immediately clouded over with self-doubt. Something was pushing back against his memories and stopping him from recalling the spiral’s significance. But it was a very different story in the recording. Shattered watched himself observe the screen completely spellbound, only the slightest sway noticeable in his statuesque focus.

It was beyond unnerving, yet what was more unsettling was the voice he heard off screen, calling to him.
“That’s a good boy; now bow.” The voice was deep and calm; whoever it was they must have felt quite at home in the allicorn’s room. It was easy to see why though as Shatteredmind watched himself slowly lower down onto his front hooves in a sign of submission, eyes still firmly locked onto the spiral. This person clearly had some power over him, and from the look on his own face the alicorn evidently enjoyed it; but then why couldn’t he remember a single second the evening?

“Recite,” ordered the stranger. Shattered’s vocal chords tightened up instinctively, as if he was about to say something but felt the words catch in his throat at the last second. His recorded self had no such reservations however as he began to thoughtlessly chant.
“Serve, obey, submit. Serve, obey, submit. Serve, obey, submit.” Over and over again he listened to himself drunkenly repeat the mantra, face pressed into the carpet submissively for his unseen master. Despite witnessing himself perform the degrading act, it was hard to feel repulsed or embarrassed. Instead he felt, jealous.

Though he couldn’t recall the events of the night before, there was a sunken desire beginning to resurface as he watched himself being shaped and moulded into an obedient pet. He could even feel his own front legs begging to buckle and join his previous self, face down on the floor. Pride kept him standing for the moment, but it was beginning to feel…wrong. Like he was trespassing by standing upright instead of bowing down like the servile pony he was.

His mind was even beginning to split into two trains of thought. Part of him knew something wasn’t right, that he had been toyed with and the stranger could very well come back for him. Yet danger didn’t arise in the alicorn’s mind; his situation was becoming more normal as time went on, as if watching his own training back was just part of his morning routine. Though he couldn’t shake the feeling he was forgetting to do something. His memory had already been spotty today, yet he still knew there was something significant missing, an itch that he needed to scratch.

“Kneel,” came the deep voice once more. But those words didn’t echo from the video, they were clear and Shattered’s ears perked up towards the doorway. He didn’t have time to react however as his body buckled automatically, pressing his lower half down towards the floor just as he did in the recording.
“Good, boy. Glad to see that you enjoyed the little refresher I left you,” the stranger continued. The words seemed less foreign as the alicorn remembered the only person they could be from, his master. Despite being unable to see his domineering owner, the silhouette of a figure in his mind was clearly recognisable.

“Recite,” his owner commanded. Shattered knew the words he wanted to hear, they were so fresh in his mind after all.
“Serve, obey, submit. Serve, obey, submit,” the alicorn chanted, a blissful smile spreading over his face. The screen in front of him flickered for a moment before adopting the same enthralling spiral that he succumbed to the night before. It took no time at all before he found himself slipping into the centre of the pattern along with every last one of his thoughts, knowing that his master would replace them.
“Now, let’s pick up where we left off.”