Grew a Spine

Bob may have opinions, but he doesn't act on them if someone disagrees. Instead, he will follow their instructions or advice. This someone might be anyone, a single person that he is dependant on, or the prevailing attitudes in society. Then Bob starts to actually trust and act on his own judgment, and begins to go his own way. Bob earlier had no independent judgment in relation to some external factor, and this is the growth and expression of his own judgment: he's growing a spine.

This is a form of Character Development, and often a defining moment in a Rite of Passage. It's also a staple of a Coming of Age Story, where it does not necessarily mean that Bob has more resolve than earlier, but rather that he has learned to follow his own independent judgments. It might be lousy judgment, but at least he has started to develop and act on it.

As a trope, this can take two forms:


 * 1) A plot arc for a character. This is the long and slow variety.
 * 2) A single scene, where the character unambiguously chooses their own way in a plot-relevant fashion.

Grew a Spine is normally a big part of a Coming of Age Story, and can be assumed to be included as part of that. Please only include such examples if Grew a Spine is the major part of the Coming of Age Story.

Some starting points for Grew a Spine is Extreme Doormat or Shrinking Violet, but the character might just be inexperienced and unsure of themselves. After all, this is all part of growing up. May coincide with Took a Level In Badass or Sudden Principled Stand. Has nothing to do with the evolution of vertebrate animals.

Anime

 * Neon Genesis Evangelion: Shinji tries to be more self-assertive and confident throughout the series. It backfires horribly until the very end, where his determination to live no matter how much life sucks finally lets him earn a happy ending.
 * Yukiteru of Mirai Nikki.
 * Hiroko in AKB 49 Renai Kinshi Jourei opposed her Fantasy Forbidding Father for the first time in her life after he demanded her to quit her aspirations as an Idol Singer and she refused, which led to her father estranging her and her gaining even more resolve than before to pursue her dreams.

Film

 * Luke leaving Yoda's training in The Empire Strikes Back to save Han and Leia.
 * This is a big part of Raven's character development in X-Men: First Class.
 * Todd in Dead Poets Society goes from extremely shy and incapable of speaking up for himself to
 * C.C. Baxter  in The Apartment.
 * Near the end of School of Rock, Ned the perpetual pushover is getting chewed out by his girlfriend for his spinelessness. Right when she asks if he's ever going to get around to standing up for himself, he interrupts her by heading off to the concert that she didn't want him to go to. Many of the kids also grow spines in a more gradual way, by learning to defy their overly strict parents.

Literature
""She's Commodore Vorkosigan's prisoner. Sir.""
 * In the Vorkosigan Saga:
 * In Shards of Honor, this is combined with Sudden Principled Stand when Sergeant Bothari refuses to rape  as per Admiral Vorrutyer's orders.


 * Ekaterin in Komarr and A Civil Campaign, though it is probably better to say that she found and nurtured the spine, rather than grew it.
 * William de Worde Grew a Spine relative his father in The Truth. An example of the Coming of Age Story variant.
 * In Chronicles of the Kencyrath
 * Donkerri ordering the Caineron troops to their posts in the end-battle in Dark of the Moon, countermanding his grandfather's orders.
 * A plot arc for Torisen in his relation to Adric Lord Ardeth in the same book.
 * Ella Enchanted is a concrete-metaphor version of this, where the protagonist has been magically compelled to be a pushover.
 * In On Basilisk Station, the first Honor Harrington novel, Alistair McKeon has a strange variety. He proposes a moral course which is promptly discarded as wrong, but the very act of making an independent proposal against The Captain and arguing for it was a key in developing the dynamic between the characters.
 * This is the main character development arc for the protagonist of Doc Sidhe.
 * A minor plot point (and one of many) in The Wheel of Time. Nynaeve is infuriated that the Kin are helplessly deferential to the Aes Sedai despite being technically independent and in many ways more learned. She endeavours considerably to get them to collectively "grow some backbone" and stand up for themselves, and they gradually do... to her, which is not remotely what she intended.

Live-Action TV

 * In one episode of Head of the Class Jawarhalal (an Indian student) is suddenly well known for agreeing with everyone about everything. Then the class goes to see Mr. Moore's off-off-off-Broaday post-post-Modern production of Hamlet. Everybody hates it except Jawarhalal, who defends it to everyone. They're so caught up in trying to prove him wrong that until the end of the episode they never ask him why he likes it and don't notice that he's disagreeing with them, counter to his personality.

Mythology

 * In some interpretations, Adam and Eve eating the fruit of knowledge.

Webcomics

 * Tavros Nitram, from Homestuck, finally stands up to Vriska and actually goes to fight her when he learns

Western Animation

 * Edd of Ed, Edd n Eddy had a few moments of this, notably in "The Day The Ed Stood Still" when he scolds Edzilla for
 * In My Little Pony Friendship Is Magic, Fluttershy does this after assertive training under the minotaur Iron Will. She takes it a little too far for a while, though.