Step 1 is the most important. This is the foundation the rest of the program is built on.
Live one day at a time. Like the movie where the guy digs himself out of prison with a little rock hammer. Every day chipping the wall a little bit. After several years of this he has a long tunnel dug out. This should go much quicker then it did for Andy in the movie. I think in a week, a couple weeks, especially one month you will see big gashes taken out all of this stuff you feel weighing on you right now. Especially in those first weeks the obsession will visit from time to time but it blow over quicker then you think.
I remember my first meeting i had a good feeling of just surrendering this only way of life that i had known since age 14. My way had landed me in so much trouble so I was all in on trying another way.