If you were to give yourself a grade, what would it be? An A+? B-? Where are you falling short? I'm not talking about grading yourself against some imaginary version of yourself... we're talking about the real you. How good a version of yourself are you?
No matter how curious you are about what your ex is up to, there's never any good that can come out of scrolling through his/her Facebook page. Let go of this bad habit and let go of the ex so that you can move on to better things.