I was a chronic relapser.....25 years later I worked the 12 steps with all the earnestness I could muster....for the first time in my life I was and still am comfortable in my own skin. I worked those steps 6 years ago and counting!
Low self-esteem, well, I worked with my sponsor on those steps and while learning to live sober, my self-esteem is okay. Amazing.
Find what works for you, I mean, try everything!