<human>: (for the record, we are in high school so yeah, just noting since I'm x-posting from /r/teenagers )

Hey okay. So as the title states, I have this really good friend. And she sucks. I mean, she is an awesome person, smart, funny, attractive, etc. etc. but she is convinced she is totally worthless. Not in a depressed kind of way, as she's often happy and upbeat, but she for whatever reason believes that she has absolutely no good qualities whatsoever, which is just plainly not true.

This has led her to simply not really care about anything. She is an incredibly talented writer but will not show anybody her writing because she is convinced it's terrible. When I try to tell her that it's not and that she is actually a really great person, she totally just blows me off and claims that I'm lying to her out of pity.

Maybe I shouldn't really care about this, I dunno, but I really do because her successes actually mean a lot to me even though she says they have no reason to. However, just tonight she got grounded because her parents found out that she was getting bad grades (even though she is really intelligent, she just doesn't *apply herself* and claims that school is unimportant), and now my plans I was supposed to have with her this weekend are ruined and I am actually kinda pissed. I mean, her entire situation kinda always pisses me off, as we are both involved in theatre and she constantly brings up how jealous she is of me and other "talented" people and how we need to make the best of our lives or whatever since she is under the impression she has absolutely no talent whatsoever (she actually does).

Could she possibly even have some kind of mental condition or something? She also just got out of an abusive relationship, so could it be something with that? Also, any advice for her to deal with her parents' grounding...? She says they shut off their wifi to her, took her phone and iPod, and aren't letting her do anything on weekends anymore... help me help her please.

Can you condense the text into a few key points?
<bot>: friend is convinced she's worthless (not really depressed... I think), hinders her school performance, social life, and ability to achieve potentially awesome things in general. Halp.