Be proud of yourself, you've come so far. Usually you wouldn't have even considered getting up and going with them but not now. Now your able to walk away knowing you've done the right thing. The careless life no longer interests you. One day I know you'll be able to walk away from them & everyone else who will ever bring any kind of negativity to your life. It's hard sometimes but give yourself credit hunny, remember how you were just a few months ago. It may hurt now thinking you have to let go of everyone but that's not true you should be a vessel in their life show them the way, encourage them that their loved by not only the name above all names but also by you. But most of all share your testimony ! How are you meant to encourage others and show them how far you've come when they don't even know your story ?!
It's all good preaching about righteousness and good news, but when you don't share your own good news your a hypocrite ! No way to sugar coat it.