Work was awful for me in every way at first...couldn't concentrate, exhausted, bored. On days I happened to feel a little better, well I sure didn't want to be working.
That said....being sober gives you back choices that drinking took away. If we stay sober, work on sobriety/program and heal...one day we can evaluate ourselves and our goals and make plans for change in all areas of life, including work/career. Sober is the key to all positive change in my life.