I think we have to replace the addiction with something that feeds our soul to have it all make sense and balance out. We robbed from our souls and selves while drinking/drugging so we have to counteract that.
You could start by writing down as many things as you can think of that will bring you joy. Join the site
Pinterest It is full of ideas, creative people, things that may inspire you and help you find your direction.
Find some inspiring books to get you going. I like anything by Sark. If you're not familiar with her, her books are worth a look. End the Struggle and Dance with Life by Susan Jeffers was great too.
Spend some time around children. They are comfortable being aliens and know how to enjoy life.