OK I'll let rip
Look at the amount of NC time you've done and give yourself a target to double it, then double that, and so on. Take each chunk at a time. Think: right I've done 15 days, so now I'll get to 30.
As already advised, delete every means of contacting her.
Decide for yourself that no matter what she does to try to reach you, you WILL NOT respond.
Don't ask anyone to check her Facebook.  :)oing so keeps up your thoughts about her. Turn your attention to yourself.
When you find yourself ruminating, get busy fast doing something you enjoy immensely and then congratulate yourself for doing it.
Stay active and set some goals. Think about what you've always wanted to do and take steps to make it happen. The more you focus on you the less of your energy you are putting into thinking about her and as you become happier and more fulfilled it will give you a balanced perspective when you do look back about what your life was like before and how much better it is now.
Do not allow yourself however to forget the bad times. If you find yourself missing all the great moments, immediately try to switch to remembering the things that were hurtful and hard to live with.
Stay strong.
Love and light x