The 3 dimensions of sobriety are about BODY, MIND, and SPIRIT.
A) PHYSICAL SOBRIETY
1. Go to AA/12-step meetings daily. 90 meetings in 90 days is a great first start. It's easy, free, all you have to do is show up. Get a sponsor, work the steps. It's the largest community of people who all never wanted to be there either.
2. EXERCISE! Can't stress this enough. Nature's free & sober fountain of endorphins. Aim for 3x/week+. Invest in a trainer at the beginning to help with motivation. Probably one of my most valued practices, critical for my sobriety.
B) MENTAL SOBRIETY
1. Therapy - 12 step meetings / groups are great, but it really works well when combined with an individual therapist. You realize there are loops of thought in your mind that can fester into relapses, and finding out how to articulate these feelings to a professional allows you to snip them.
2. Work - Start slowly, don't jump back into a career that's too demanding or stressful, but I found it important to be intellectually stimulated and constructive with my time.
C) SPIRITUAL SOBRIETY
1. Meditate! I strongly recommend Vipassana-style meditation. There are free, donation-based 10-day programs that are intense, but immersive.
2. Volunteer. Giving back to the community lightens your soul and spirit. Helping others helps you appreciate all the beauty in your own life.
Feel free to try any of the practices above or discover your own!