You stop using by following through on your commitment to change. Following through means you overcome being embarrassed, shy or hesitant and that you DO things differently. Once you do the new actions, you will think differently about picking up the first drink or drug. This is how you stop using. "You just bring the body and your heart and mind will follow." The new actions are going to meetings, using a Sponsor, using this App, praying, meditating, picking up the phone when you get a craving, etc. It's really that simple. These new actions are not threatening to anyone's philosophical or religious beliefs. However, your addictive voice may tell you they are a threat. Your addictive voice wants you to die from addiction.
Don't listen to your addictive voice. DO recovery footwork.