You know who's a terrific actor? Sean Penn. Thing is, he is a hopeless leftoid so he tends to choose projects highlighting his views, which are retarded. His talents then go to waist.
Same for Lena. She can set scenes and create realistic characters, but she frames them within his worldview of liberal progressiveness and feminism. Her characters and situations are real and feel real, but they're also unlikeable because that's how most people see characters like that. And she somehow knows that.
Shoshanna, at the end of Girls, decides she doesn't want to hang out any more with the other three. She says she's found girls with "good jobs and pretty bags" to their face. And she found a normal guy she's engaged to. When the other three try to drag her to their drama to solve their friendship, she's just like "no, I won't" and leaves because they're doing a scene during her engagement party. She also previously told Hannah (Lena) that she wouldn't want to be like her, always miserable and mentally unwell. She's considered the best character.
Funny how Lena has some self awareness that her life is a mess, yet she doesn't see that Shoshana's decisions are what make her life improve and those decisions are simply not being or act like Hannah or Lena or being near her. Lena wrote this character pretty well, she just won't follow her own subconscious advise.
Tiny Furniture is the same: we are told she was miserable when in college, she wasn't sure she liked graduating in film theory, and has no idea what do with her life. Then why she went to college? Because she was meant to go there. She's only happy having boyfriends, she would have been happy marrying since the beginning of her life (Lena, not her character) but her views tell her that was wrong.