Randy Travis Sobers Up and Is Working On New Music

The troubled 53-year-old wound up behind bars several times in the past year after multiple booze-related arrests (naked DWI, public intoxication, assault).

Now, Randy's lawyer, Larry Friedman, tells TMZ … Travis has acknowledged the problem ... and decided to remove liquor from his life so he could focus on improving his health.

"[Randy] works out 3 hours every day and is in the best shape of his life," Friedman says … adding, "He has a high protein diet and takes a lot of vitamins."