Sure.
Initially after I stopped drinking I considered myself "high functioning". No absenteeism, consistently great performance reviews across mutiple employers...my professional house was surprisingly in order for being a drunk my entire career.
Funny thing is, since I stopped drinking I have experienced professional success well beyond what I'd experienced prior.
So, it turns out the term "high functioning" was so much rubbish. In actuality, during my drinking years I was unknowingly an underachiever of great degree.
And I should add, the same is double true of my job as "husband".