No contact

I am so grateful to have found answers to the many years of heartbreak i have suffered. I am very new to all of this and i am having a hard time with no answering his calls. For the past 20 some years i have always answered and got sucked back in. Now i am not answering the phone and it feels like a bit of revenge. Getting back at him for the times he ignored me! Am i suppose to feel happy ?? It feels strange being the one to hit the fuck you button on my phone and at the same time i feel empowered. This is still so confusing for me :(