Specifically, stop drinking alcohol for a while, and use intermittent fasting with pure water as way to allow your body a specific amount of time every day to heal itself. Depending on how messed-up your liver is, this may take months, and it may take years before things are fully restored to homeostatic levels. However, just make small steps forward, progressing slowly while you take the other necessary steps in terms of nutrition, training, and lifestyle.
