After a thousand years in the moon, and even longer of not being yourself, how do you remember what you were truly like? Princess Luna isn't sure who she is anymore, and tries to rediscover herself through how others see her.

Some shipping in Chapters 2 & 4.

Pinkie Pie's unrequited love for Rainbow Dash reaches crisis point as she fears the party in her heart has at long last come to an end.

Illustration by the awesome Mogasaki/Swaetshrit.

Luna discovers something hidden from Celestia for twenty years, now, with emotions running high, she enlists the help of the Mane 6... but what seemed to be a single mystery, soon reveals a darker and much more complicated plot that will soon decide the fate of Equestria.

Check out the Empty Room TV Tropes Page (Warning: Spoilers!)

Revised chapters edits and proofing (with many thanks) by: lammy, Trevor, Nick Nack, Fifth Alicorn

Distance can drive us apart. It can also bring us closer together.

After all is said and done, and the ponies have gone their separate ways, the only way they have to keep in touch is through letters.

Original Equestria Daily post is here
Russian translation
Chinese translation
Polish translation
Spanish translation

Now with music and audiobook

One by one, Twilight and her friends must come to terms with the consequences of being the Elements of Harmony.

These stories take place in the intervening time between Season One and Season Two,
with the exception of Ditzy Doo: Muffins, which takes place early in Season One.

The series continues in the sequel, Secrets and Lies.

Pony Psychology has a TV Tropes Page.

Rainbow Dash usually had her head in the clouds, but she always thought she knew up from down. When an incredible revelation sends her life into a tailspin, she finds herself at the mercy of emotions she never thought she had, faced with hard questions and impossible choices.

Life is full of changes, but none of them are quite as disturbing as having a horn pop out of your skull…

Original Lauren Faust canon; non-alicorn Twilight, non-alicorn Cadance, no ascension. Diverges from the cartoon after season 3, with nods to later continuity wherever possible. Contains mature themes.

It's winter in Ponyville, and Diamond Tiara is queen of the Hill. Can the Cutie-Mark Crusaders cast her from her snowy fortress?

Summer is the perfect season for things that grow. However, growth needs fuel, warmth can burn, and romance can be the most volatile fire there is. After she leaves Ponyville and lands a job as a city guard, Gilda will have summer days that are filled with lessons of growth, of love, and of pain.

This is a continuation of Heart of Gold, Feathers of Steel. I recommend reading that story first.
This story is concluded in Evening Flames

Special thanks to WentoX for this awesome, custom cover.

Friendship lasts forever.

Right?

Three years ago, Gilda and Rainbow Dash became fast friends at Junior Speedsters' Flight Camp. Time took its toll, though, and the pair drifted apart.

When Gilda tries to reconnect with her not-so-long lost friend, she'll discover that things can change a pony after three years: a new home, new job, and new friends.

This story continues in Summer Days

Title Image Credits
Original: http://mallorysbeast.deviantart.com
Coloring: Bandit (no link available)

When Twilight plays with magic beyond her control, she finds herself and Rainbow stuck in a strange, horrible world. When they find out what happened, will they be able to get home? Will they even want to?