Sometimes those in Candor can be considered honest to a fault - there are times when a certain degree of honesty can be considered insulting. While those in Candor would rather hear the brutal truth and maybe an insult, I don't know if I always would.
Being in Candor would definitely either give you thicker skin or break you.
Candor seems to be the hardest faction to be yea or nay about. They're very truthful and while it might be hard to always hear the absolute truth (and wear no colors, I'll admit), there's not an incredibly strong negative there.
Though, I might change my mind after I'd been there a while! (It's also not as discussed - either on Candor pages or in Divergent, I don't think - but sometimes the truth isn't black and white, especially when it comes to larger issues, so I would likely have a problem with that in Candor.)
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