Image imported from derpibooru
Original Description:

Back when she was a Unicorn, humble Twilight Sparkle always took pride in her intelligence, her prowess in magic, and her organizing. Of course, she was worried that she could let her friends when she began studying the magical properties of friendship. And even today, she can be a little too hard on herself when a plan doesn’t always work out the way she intended. Nonetheless, she had no idea that she would be proud of her newfound knowledge of friendship and be one of the wielders of the Elements of Harmony. And soon, all that knowledge and the love of her very best friends would result into something far grander. Even if she doesn’t think it’s necessary, I for one will always be proud of Twilight for all the things she has done, for who she is, and for sharing with us the Magic of Friendship.

Traced from My Little Pony: Friendship is Magic Season 1 Episode 11, “Winter Wrap Up.”