Physically, sleep, lots of it. And don't forget cheeseburgers! I was 60 lbs underweight when I came in. My body craved and needed calories, protein and fat.
Mentally, I had to be surrounded by other recovering addicts in the solution. I did this in a county detox. I had tried to avoid this previously many times and it just didn't work for me. After detox, I continued on with meetings everyday not missing a beat. I believed things would be different this time because I was doing what I knew I ought to do to begin with.
Spiritually, as soon as I was clean, I started thanking God for my sobriety from the start. I was advised to do this by my sponsor at the time (who also happened to be a shrink!). He didn't understand why I had been praying for something I already had.
All the above really helped fill the void. It also helped for me to have my expectations in the right place. I expected nothing short of a miracle--and that's what I got.
Best wishes to you AngelHugs!
sumtimes slowly