It’s okay to be a bitch (sometimes)
Okay so Blair Waldorf is extreme, she was actually mean, but aside from that fact she went after what she wanted. She probably still would have been considered a bitch if she would have been a little nicer to Little J because she was never afraid to give up. She got what she wanted because she fought for it.
Money doesn’t give you an advantage.
Blair Waldorf didn’t get into Yale even though her Dad was an Alumni and probably would have made a sizable donation to the school in her name. Let's face it, Nate got screwed time and time again because he was played dirty by his rich grandfather and his dad lost him millions of dollars and he was homeless. Basically, the lesson we got from that is that Dan has it made because he can’t lose millions of dollars.
It’s okay to fight with your best friend
Serena and Blair wanted to kill each other time and time again but they also made up because they are best friends and they loved each other.
Being dissaving and lying gets you nowhere
Right GG?
Your first Boyfriend probably won’t be your last
i.e. Nate and Blair
Always stay true to who you are
Jenny Changed so she could fit in with Blair, Blair changed to fit in at NNU and Dan changed who he was entire to be a part of the upper Eastside. The only one who really stayed true to who they were was Chuck, he never stopped being a jerk, he just stopped being a jerk to Blair. NO matter how hard they tried to change it didn’t matter because they failed not being themselves.
Family doesn’t mean Blood
Blair, Serena, Nate, and Chuck were more of a Family then any of theirs put together. Sometimes your family isn't your blood, it’s who would Bleed for you.
Know yourself worth
There was not a moment, not even a second that either Blair or Serena questioned how much they were worth. When Chuck tried to trade Blair for his company, she knew she was worth better. Time and time again she told Serena that she deserved better. And because of that, they accomplished so much.
Secrets don’t keep you close; they pull you apart
As it turns out, Pretty Little Liars was wrong. Secrets only strain your friendship, only pull apart your relationship. There is no good that comes from them.
Don’t judge a book by its cover
In reality, Blair and Dan were a lot alike. In the first season, they were both going through family problems, and they both watched the guy and girl they loved to be together even if it was for a short time. But in the end, they both ended up happy. The problem was, they both were so quick to judge and hate the other.