prektjt.dc is right. Honesty. Things fall apart. Honesty is the best road to take. The best (and cheesiest) way to say this is: We are all snowflakes. Each situation is different. Look at the "note" in all capital letters on prektjr.dc's answer. You have to WANT it. You can't just expect everything to work out. You know how Jesus only helps those who help themselves? It's like that. The systems, the steps, the meetings. Stay with it. Like a diet. Think inches not pounds. One day at a time.
How can an addict help his or her family through their own recovery? By recovering. By being honest.
Sorry to answer a question with a question but...I'm going to:
How can a recovering addict's family help them through their own recovery? Answer: The same. Honesty.
I have a close family member who has been to rehab, jail, and even moved away several times to get clean and sober. In fact, the last time he went away for rehab was under a court order. No joke, the first day he was out he had a needle back in his arm. He told me. Then he wanted me to lie to our family and keep his secret while he kept the face of a "clean and sober addict in recovery" which, of course didn't last long. Broken hearts all around. No honesty there.
Staying with the snowflake metaphor, the addict should as his/her family this question. What can I do to help you help me?
And this is important enough to repeat: ONE DAY AT A TIME!