Never feel like you can't stop using. Never feel like you'll always be down and dependent. A positive attitude goes a long way. Start constantly reminding yourself that you can and you will overcome this struggle. I myself have relied on substances to make me feel good for a long time. Once I started believing in myself and reminding myself with positive reinforcements, I started putting more effort in my sobriety and this lead me to stay focus on staying sober. I did and I know that you can so please believe in yourself. Good Luck!