I went through my parents nasty divorce, they both ended up proving the other unfit so they both lost custody of my little sister and I. I was also pretty messed up over it. I never had formal counseling but my grandparents got custody of us. Although I hated living with them, that was the best place for me. I was in 7th grade at the time and I only behaved great for my grandparents because they were the only adults that had earned my respect. Here are some of the things my grandma told me that I haven't forgotten.
"There are two ways you can deal with the rough stuff in life. #1 You can dwell on it and allow the unfairness to consume you and ultimately destroy you or #2 You can use that stubbornness to your advantage and challenge the world that seems determined to mess you up. You want control of your life, take it, this is where you need to start. You're a smart girl, show them all how strong you are and prove this world can't destroy you because you can survive anything you put your mind to."
Another thing she did which I hated was anytime she saw me pouting around or depressed or even acting like I was happy when she knew better, she would set me down for an "adult conversation". She would let me vent what was wrong if I wanted to but she never pushed when I didn't. She always said, "Alright sweetheart it's time you take control of what's bothering you. There's nothing you can do about what happened but you have complete control over your reaction to it. Give me one good thing you can learn from the situation and one way it could have been worse." Sometimes I would cooperate and find an answer but usually she had to say, "Well, when you realize you are strong enough to take control of your life today I will expect your answer in writing in exchange for your phone." I lived there for two years and did this so many times that now I naturally do it every day. I believe this was the best thing anybody ever did for me.
I liked those little books of proverbs and wise quotes so she saved every single one she could get her hands on I'm sure. She'd see a cool one in the paper or on a message board somewhere and copy it down for me. Every time I turned around she was giving me these quotes. I acted like I didn't want them because I knew her intentions but I saved them and eventually I decided to copy them down in a notebook. For some reason I took pride in that notebook and it made me feel better like I had some secret to life that nobody else had. I think that notebook just reinforced everything else she was trying to teach me about life.
In case you haven't noticed I posted a question similar to yours because now I am divorced but my kids are too young for me to try what my grandma did.