How do you fight the urge of texting her or to see her photos?

I haven't any contact since last argument . And it's been more than year maybe like year and half 0 contact no social media no late text no friends in common to hear about each other nothing of nothing but at night when I can't sleep it's all I can think and I'm dying to do so . I don't do it cause 1 I'm afraid of what I could find and 2 I just know is not good for me but fuck I miss her.