Sometimes, bad things happen to good ponies. A year following a tragic incident, Twilight Sparkle returns to Ponyville to visit what she has been missing - her town, her memories, and most importantly, her friends. But will everything be as she remembers it?

This story has a sequel titled "In History, Maybe".

When Scootaloo wonders why Rainbow Dash seems to be avoiding her, Dash decides to tell a story from her youth, about friendship gained, and friendship changed, in order to explain why seeing Scootaloo has been making her sad.

Sometimes, when you've lost so much, when everything you do seems to come out wrong, and when you don't feel like anything but a failure, it can seem like there is no other option but to give up.

But when one pony feels so lost, so inconsolable, so forlorn, that she makes a life-changing decision that almost leaves her shattered forever, it is up to her friends to bring her back.

When you lose something that you can't replace, when you love someone but it goes to waste, and when the tears come streaming down your face, is there anyone who you can turn to...

...to fix you?

Sparkler has a happy life with her adoptive mother and sister. However, a secret weighs heavy on her. Seeking some advice and relief, she comes knocking at Cheerilee's door.

What does the filly want to confess?

Many thanks to Taggerung for the amazing picture! The original can be found here: http://ballman64.deviantart.com/#/d4k8s3q

No one expects to go to sleep and never wake up. There's always tomorrow, or the next day. There was always time. So, when a young life is extinguished before its time, it becomes especially difficult to handle. When the spirit of that life is forced to face and accept her death, what will become of her afterlife? Scootaloo will soon be faced with this tragedy, and this is her story.

One question with many answers

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.

Each of the chapters of this fic is an independent story featuring one of the Mane Six having an encounter with the supernatural. They are presented as one story because of their common theme. The stories are:

Fluttershy: The Curse of the Night When Angel falls sick, Fluttershy ventures into the Everfree Forest at night to find a remedy. Though she faces danger, she escapes... but not unchanged.
Rarity: Blood and Water You know the story. Rarity gets seduced by a creature of the night, and her friends don't realize what's happening until it's too late. They find the vampire who turned her and destroy him. But then what happens?
Rainbow Dash: The Big Battle Discord's defeat didn't erase every trace of his influence on Equestria. Fortunately, hard-working ponies are already gathering the remnants of his power into Manehattan for easy disposal. What could possibly go wrong?
Pinkie Pie: Gallows Humor Pinkie Pie, Ponyville's premiere prankster, is dead. So why haven't the pranks stopped?
Applejack: One of the Herd Applejack may be in charge of Ponyville's biggest farming community, but that doesn't mean she can't take a break now and then. Besides, tonight's meteor shower should be even better than last night's...
Twilight Sparkle: The Case of Wild Clover the Warder It's a boring day in Canterlot, and Twilight Sparkle has time to kill. Maybe picking up an old lot of books will brighten her mood.

Feedback and error-spotting welcome!

A grown up Scootaloo has to deal with her ghosts and the legacy of a nearly unreachable master

This story explores a dragon's nature somewhat, and spins a narrative of a middle-aged Spike regaling a visitor about the favorite item in his hoard: a statue of his favorite pony. It is a story about Spike, Rarity, reminiscing, letting go, and preserving that which is most precious to us.